Encycolorpedia

#626b72 Codice Colore Hex

#626b72 Paint ChipIl codice colore esadecimale #626b72 è una sfumatura di blu-turchese. Nel modello di colori RGB #626b72 è composto di 38.43% rosso, 41.96% verde e 44.71% blu. Nel sistema di colori HSL #626b72 ha una tonalità di 206° (gradi), 8% di saturazione e chiarezza del 42%. Il colore ha una lunghezza d'onda approssimativa di 482.02 nm.

Variazioni di colore

Nomi colori correlati

Combinazioni di colori

Scaricare: GIMP GPL Adobe ASE (Adobe Swatch Exchange) Sketch Palette

Colori monocromatici

  1. #4f585f
  2. #555e65
  3. #5c656c
  4. #626b72
  5. #687179
  6. #6f787f
  7. #757f86

Tinte e sfumature

#626b72 al nero

  1. #626b72
  2. #7a8288
  3. #939a9f
  4. #adb2b6
  5. #c8cbce
  6. #e3e5e6
  7. #ffffff / #fff

#626b72 al bianco

  1. #626b72
  2. #51595e
  3. #41474b
  4. #323639
  5. #232628
  6. #151718
  7. #000000 / #000

Vernici

Pitture simili

  1. Crown Diamond

    1. ★ 7355-63 Kensington Grey
      #616a71
      ΔE = 0.406 / LRV ≈ 14.0%
    2. 7406-63 Happy Piccolo
      #5f6568
      ΔE = 3.154 / LRV ≈ 12.7%
  2. Dulux Australia

    1. ★ Picnic Hill / F24
      #616b73
      ΔE = 0.560 / LRV ≈ 14.3%
    2. Studio Grey / O16
      #59616a
      ΔE = 4.119 / LRV ≈ 11.7%
  3. Clark+Kensington

    1. ★ Smooth Shale / EXTCC-50
      #636b71
      ΔE = 0.563 / LRV ≈ 14.4%
    2. ★ Colonial Shades / 5066
      #64696e
      ΔE = 1.644 / LRV ≈ 13.9%
  4. Pantone / PMS

    1. ★ P 174-11 C
      #616a70
      ΔE = 0.677 / LRV ≈ 14.0%
    2. P 176-11 U
      #5e6465
      ΔE = 4.231 / LRV ≈ 12.4%
  5. Laura Ashley

    1. ★ 45-4 Chartwell Gray
      #626971
      ΔE = 1.120 / LRV ≈ 13.9%
    2. 1616 Chimney Sweep
      #6f6f6f
      ΔE = 4.841 / LRV ≈ 15.9%
  6. Behr

    1. ★ Summer Storm PPU26-22
      #656d75
      ΔE = 1.133 / LRV ≈ 15.0%
    2. Antique Tin PPU18-03
      #6e7174
      ΔE = 3.845 / LRV ≈ 16.4%
  7. Pratt & Lambert

    1. ★ Lavender Dusk CL021
      #636970
      ΔE = 1.176 / LRV ≈ 13.9%
    2. Bracken Tenement Blue Slate CW723
      #696c6c
      ΔE = 3.987 / LRV ≈ 14.8%
  8. Kelly-Moore

    1. ★ Blue Lake / KM3799-3
      #5e6971
      ΔE = 1.212 / LRV ≈ 13.7%
    2. Camp Muir / SS4321
      #5e6469
      ΔE = 2.965 / LRV ≈ 12.5%
  9. Earthpaint

    1. ★ 5-37-5 Thunder Grey
      #656c71
      ΔE = 1.235 / LRV ≈ 14.7%
  10. Coronado Paint

    1. ★ 8263 - Romantic Mood
      #5f6c73
      ΔE = 1.317 / LRV ≈ 14.4%
    2. 8231 - Last Light
      #6b686b
      ΔE = 4.648 / LRV ≈ 14.1%
  11. Resene

    1. ★ Quarter Tuna B55-009-258
      #656a70
      ΔE = 1.382 / LRV ≈ 14.2%
    2. Quarter Grey Friars N51-007-260
      #5e6267
      ΔE = 3.794 / LRV ≈ 12.1%
  12. Chrysler

    1. ★ Charcoal
      #5e6870
      ΔE = 1.391 / LRV ≈ 13.4%
    2. Heron Gray
      #616568
      ΔE = 3.240 / LRV ≈ 12.8%
  13. Asian Paints

    1. ★ Blue Lake / 8262
      #5e6870
      ΔE = 1.391 / LRV ≈ 13.4%
    2. Granite / 630
      #69737c
      ΔE = 3.347 / LRV ≈ 16.7%
  14. Federal Standard

    1. ★ Federal Standard 36118
      #676c73
      ΔE = 1.562 / LRV ≈ 14.8%
    2. Federal Standard 36099
      #5f656a
      ΔE = 2.603 / LRV ≈ 12.8%
  15. Cloverdale Paint

    1. ★ Blue Lake / 8262
      #606d73
      ΔE = 1.580 / LRV ≈ 14.7%
    2. Shady Place / 8310
      #616866
      ΔE = 5.084 / LRV ≈ 13.4%
  16. Nerolac

    1. ★ Sinbad - 2965
      #646e73
      ΔE = 1.587 / LRV ≈ 15.1%
    2. Gloomy Sky - 2979
      #566671
      ΔE = 3.701 / LRV ≈ 12.7%
  17. Humbrol

    1. ★ 123 Extra Dark Sea Grey
      #616e76
      ΔE = 1.602 / LRV ≈ 15.0%
    2. ★ 79 Blue Grey
      #616974
      ΔE = 2.220 / LRV ≈ 13.9%
  18. Benjamin Moore

    1. ★ Ocean Floor / 1630
      #60676d
      ΔE = 1.677 / LRV ≈ 13.3%
    2. Arctic Seal / CSP-15
      #6d6c6e
      ΔE = 4.231 / LRV ≈ 15.1%
  19. ICI Paints

    1. ★ Inland Waters 90BG 16/060
      #5d686e
      ΔE = 1.685 / LRV ≈ 13.4%
    2. Easton Blue 10BB 18/106
      #5d6f7c
      ΔE = 3.914 / LRV ≈ 15.2%
  20. Sico

    1. ★ 6171-63 Caravel
      #5e6a74
      ΔE = 1.758 / LRV ≈ 13.9%
    2. 6209-63 Husky
      #5c6669
      ΔE = 3.150 / LRV ≈ 12.8%
  21. PPG Pittsburgh Paints

    1. ★ Lava Gray / PPG1038-6
      #5e686d
      ΔE = 1.787 / LRV ≈ 13.4%
    2. Alley Cat / PPG1043-6
      #656874
      ΔE = 3.558 / LRV ≈ 13.9%
  22. Tollens

    1. ★ Graphite
      #5e686d
      ΔE = 1.787 / LRV ≈ 13.4%
    2. T2135-2
      #646767
      ΔE = 4.154 / LRV ≈ 13.4%
  23. General Paint

    1. ★ Roulette / CL 3135D
      #686f75
      ΔE = 1.913 / LRV ≈ 15.6%
    2. Cascade / CL 3156D
      #677176
      ΔE = 2.565 / LRV ≈ 16.0%
  24. Sikkens

    1. ★ R5.08.37 (RAL 7031)
      #5d696e
      ΔE = 1.936 / LRV ≈ 13.6%
    2. XN.02.38
      #6c686d
      ΔE = 4.778 / LRV ≈ 14.2%
  25. New Look

    1. ★ Storm Chaser / A04-02
      #61686c
      ΔE = 1.948 / LRV ≈ 13.5%
    2. London Cloud / A04-01
      #616769
      ΔE = 3.055 / LRV ≈ 13.3%
  26. Natural Color System / NCS

    1. ★ S 5010-R90B
      #606872
      ΔE = 1.950 / LRV ≈ 13.6%
    2. S 5502-B
      #686768
      ΔE = 4.472 / LRV ≈ 13.6%
  27. British Standard

    1. ★ BS381 638 - Dark sea grey
      #676c70
      ΔE = 1.972 / LRV ≈ 14.8%
    2. BS381 677 - Dark weatherwork grey
      #686c75
      ΔE = 2.318 / LRV ≈ 15.0%
  28. Jotun

    1. ★ 4638 / Byge
      #667078
      ΔE = 2.040 / LRV ≈ 15.8%
    2. ★ 4172 / Graphit
      #686c70
      ΔE = 2.212 / LRV ≈ 14.8%
  29. Caparol

    1. ★ 9007 / Graualuminium
      #646870
      ΔE = 2.052 / LRV ≈ 13.8%
    2. Mittelgrau / Mittelgrau 761
      #64646c
      ΔE = 3.921 / LRV ≈ 12.9%
  30. Devoe Paint

    1. ★ Blackberry Farm / 30BB 13/068
      #60666c
      ΔE = 2.101 / LRV ≈ 13.1%
    2. Arden Forge / 70BB 15/081
      #686a73
      ΔE = 2.809 / LRV ≈ 14.5%
  31. Jedynka

    1. ★ Sötét Szürke
      #686d71
      ΔE = 2.139 / LRV ≈ 15.1%
  32. Vista Paint

    1. ★ Romantic Mood
      #646f79
      ΔE = 2.178 / LRV ≈ 15.5%
    2. Blue Lake
      #57626b
      ΔE = 3.947 / LRV ≈ 11.8%
  33. Berger

    1. ★ Romantic Mood / 8263
      #646f79
      ΔE = 2.178 / LRV ≈ 15.5%
    2. Last Light / 8231
      #6f6b6f
      ΔE = 4.969 / LRV ≈ 15.0%
  34. Scib Paints

    1. ★ Romantic Mood / 8263
      #646f79
      ΔE = 2.178 / LRV ≈ 15.5%
    2. Made in the Shade / 8255
      #6b727a
      ΔE = 3.145 / LRV ≈ 16.6%
  35. Sigma

    1. ★ Cool Blue / S 6010-R90B
      #606f77
      ΔE = 2.241 / LRV ≈ 15.2%
    2. Cool Blue / S 6502-B
      #666e6f
      ΔE = 3.372 / LRV ≈ 15.1%
  36. Brillux

    1. 63.06.24
      #5d6974
      ΔE = 2.306 / LRV ≈ 13.7%
    2. 57.06.24
      #5f6874
      ΔE = 2.776 / LRV ≈ 13.6%
  37. Vallejo

    1. Vallejo 70.864 #188
      #61666b
      ΔE = 2.348 / LRV ≈ 13.1%
    2. Vallejo 70.991 #159
      #5d6165
      ΔE = 4.299 / LRV ≈ 11.8%
  38. Magnolia Home

    1. Storm Chaser / JG-86
      #616f74
      ΔE = 2.413 / LRV ≈ 15.2%
    2. Texas Storm / JG-142
      #626368
      ΔE = 3.902 / LRV ≈ 12.5%
  39. Flügger

    1. Klassisk Grå (U-573)
      #636770
      ΔE = 2.455 / LRV ≈ 13.5%
    2. Klassisk inde: Oregon Grape (No.53)
      #586d7b
      ΔE = 4.655 / LRV ≈ 14.4%
  40. Colortrend

    1. Denim
      #606b77
      ΔE = 2.512 / LRV ≈ 14.3%
    2. 0507
      #68737c
      ΔE = 3.302 / LRV ≈ 16.7%
  41. Duron

    1. Grays Harbor
      #626c78
      ΔE = 2.543 / LRV ≈ 14.7%
    2. Web Gray
      #63666b
      ΔE = 2.685 / LRV ≈ 13.2%
  42. Ford

    1. Medium Aegean
      #647177
      ΔE = 2.565 / LRV ≈ 15.9%
    2. Gunmetal Light
      #656565
      ΔE = 4.746 / LRV ≈ 13.0%
  43. Bristol

    1. Blue Zephyr / P228-N6
      #5b6873
      ΔE = 2.641 / LRV ≈ 13.4%
    2. Blackmore / P230-N6
      #59636c
      ΔE = 3.450 / LRV ≈ 12.1%
  44. CIL

    1. Great Grey
      #626a6c
      ΔE = 2.667 / LRV ≈ 14.0%
    2. Intercoastal
      #6d7074
      ΔE = 3.380 / LRV ≈ 16.1%
  45. Opaltone / OMS

    1. 6201
      #68717a
      ΔE = 2.672 / LRV ≈ 16.2%
    2. 6453
      #626675
      ΔE = 4.828 / LRV ≈ 13.4%
  46. Nippon Paint

    1. Trojan Gray / NP N 1996 D
      #616b6d
      ΔE = 2.773 / LRV ≈ 14.2%
    2. Bassinet Blue / NP N 1975 D
      #6d7079
      ΔE = 3.549 / LRV ≈ 16.2%
  47. Diamond Vogel

    1. Thunderstorm / 0514
      #5f646c
      ΔE = 2.948 / LRV ≈ 12.6%
    2. Zen Retreat / 0535
      #646564
      ΔE = 5.178 / LRV ≈ 12.9%
  48. Fired Earth

    1. Tempest
      #616a77
      ΔE = 3.057 / LRV ≈ 14.2%
  49. Tikkurila

    1. 565X
      #606469
      ΔE = 3.102 / LRV ≈ 12.6%
    2. 4991
      #606265
      ΔE = 4.322 / LRV ≈ 12.2%
  50. Graham & Brown

    1. Harold's Grey
      #6b6c70
      ΔE = 3.142 / LRV ≈ 15.0%
  51. California Paints

    1. DE 6348 - Draw Your Sword
      #6c7179
      ΔE = 3.173 / LRV ≈ 16.4%
    2. DE 6363 - Pointed Rock
      #646767
      ΔE = 4.154 / LRV ≈ 13.4%
  52. Caran d'Ache

    1. 808 French Gray
      #68737b
      ΔE = 3.178 / LRV ≈ 16.6%
  53. GM / General Motors

    1. Golden Quartz
      #6c6f72
      ΔE = 3.307 / LRV ≈ 15.8%
    2. Blue Frost
      #65747b
      ΔE = 3.701 / LRV ≈ 16.7%
  54. Glidden

    1. Superstition / PPG1035-6
      #5b6e74
      ΔE = 3.354 / LRV ≈ 14.6%
    2. Stormy Night
      #6a6875
      ΔE = 5.181 / LRV ≈ 14.2%
  55. Wattyl

    1. Gravel Chip / A38W
      #686d6e
      ΔE = 3.366 / LRV ≈ 15.0%
    2. Colorbond Blue Ridge ® / E51W
      #566b75
      ΔE = 3.877 / LRV ≈ 13.8%
  56. Homebase

    1. Slate Grey
      #6d7278
      ΔE = 3.409 / LRV ≈ 16.6%
  57. Levis

    1. Clear Grey B60
      #676a6b
      ΔE = 3.426 / LRV ≈ 14.3%
    2. Atl Matin B7
      #606573
      ΔE = 4.444 / LRV ≈ 13.0%
  58. Audi

    1. Mineralgrau Metallic / LY7K, Z8
      #6c7276
      ΔE = 3.427 / LRV ≈ 16.5%
    2. Delphingrau Metallic/Dolphin Gray Pearl / F5, F5F5, LX7Z
      #5a6165
      ΔE = 4.308 / LRV ≈ 11.7%
  59. Porter Paints

    1. Alley Cat / 545-6
      #656874
      ΔE = 3.558 / LRV ≈ 13.9%
    2. Sheffield Gray / 549-6
      #6a7680
      ΔE = 4.564 / LRV ≈ 17.6%
  60. Valspar Paint

    1. Blind Date
      #686a6b
      ΔE = 3.576 / LRV ≈ 14.3%
    2. Hampton Surf
      #55636f
      ΔE = 4.493 / LRV ≈ 12.0%
  61. Sherwin-Williams

    1. Grays Harbor - 6236
      #596368
      ΔE = 3.596 / LRV ≈ 12.0%
    2. Waterloo - 9141
      #536872
      ΔE = 4.310 / LRV ≈ 13.0%
  62. Mylands of London

    1. Lead
      #5e6673
      ΔE = 3.616 / LRV ≈ 13.1%
    2. Medium Grey
      #6f7277
      ΔE = 3.905 / LRV ≈ 16.7%
  63. Testors

    1. Testors 1163
      #566873
      ΔE = 3.670 / LRV ≈ 13.1%
  64. Focoltone

    1. 6058
      #68676c
      ΔE = 3.705 / LRV ≈ 13.7%
  65. Krylon

    1. Smoke Gray
      #636969
      ΔE = 3.823 / LRV ≈ 13.8%
    2. Classic Gray
      #666666 / #666
      ΔE = 4.596 / LRV ≈ 13.3%
  66. Brighto Paints

    1. 5-37-6 Griffin Grey
      #586268
      ΔE = 3.843 / LRV ≈ 11.8%
    2. 6259 Ice Star
      #6d7576
      ΔE = 5.049 / LRV ≈ 17.3%
  67. Evonik-Degussa

    1. 811
      #606a79
      ΔE = 4.014 / LRV ≈ 14.2%
    2. 4213D Puritan Black
      #5b6166
      ΔE = 4.108 / LRV ≈ 11.7%
  68. Dulux

    1. Smokey Slate
      #5b6466
      ΔE = 4.025 / LRV ≈ 12.3%
    2. Stormy Retreat
      #666665
      ΔE = 5.200 / LRV ≈ 13.3%
  69. Rodda Paint

    1. Winter Harbor H51
      #5f727d
      ΔE = 4.039 / LRV ≈ 15.9%
    2. Portsmouth Blue H49
      #5e7275
      ΔE = 4.783 / LRV ≈ 15.7%
  70. Games Workshop - Citadel

    1. Warpfiend Grey
      #6b6a74
      ΔE = 4.065 / LRV ≈ 14.7%
  71. Dunn-Edwards

    1. Vulcan / 386
      #6c757d
      ΔE = 4.077 / LRV ≈ 17.4%
    2. Pointed Rock / 324
      #646767
      ΔE = 4.154 / LRV ≈ 13.4%
  72. Taubmans

    1. Dunny Do / T150-8
      #5a7079
      ΔE = 4.138 / LRV ≈ 15.1%
    2. Hippodrome / T171-7
      #6f7478
      ΔE = 4.289 / LRV ≈ 17.2%
  73. Johnstone's Paint

    1. Urban Sky
      #5e6167
      ΔE = 4.170 / LRV ≈ 11.9%
  74. Dutch Boy

    1. Gray-cious
      #5a6067
      ΔE = 4.377 / LRV ≈ 11.5%
    2. Evening Coast
      #566b6d
      ΔE = 5.148 / LRV ≈ 13.6%
  75. Pascol

    1. Pale Tungsten PZ2110
      #606565
      ΔE = 4.440 / LRV ≈ 12.7%
    2. Pale Tungsten PZ2110
      #606564
      ΔE = 4.959 / LRV ≈ 12.7%
  76. Tamiya

    1. Tamiya 80356,XF56
      #5c6164
      ΔE = 4.484 / LRV ≈ 11.7%
    2. Tamiya 80366,XF66
      #677679
      ΔE = 4.955 / LRV ≈ 17.2%
  77. Australian Standard AS2700

    1. N63 Pewter
      #596065
      ΔE = 4.532 / LRV ≈ 11.4%
  78. Ralph Lauren

    1. Bleecker / RLUL224
      #666968
      ΔE = 4.533 / LRV ≈ 13.9%
  79. Farrow & Ball

    1. Down Pipe / 26
      #6d6d6d
      ΔE = 4.543 / LRV ≈ 15.3%
  80. Sto

    1. 35342
      #536672
      ΔE = 4.547 / LRV ≈ 12.6%
    2. 35330
      #59707e
      ΔE = 5.176 / LRV ≈ 15.2%
  81. Model Master

    1. Model Master 1923
      #53626a
      ΔE = 4.550 / LRV ≈ 11.6%
    2. Model Master 28121
      #616163
      ΔE = 5.120 / LRV ≈ 12.0%
  82. Crown Paint

    1. Herringbone
      #707274
      ΔE = 4.560 / LRV ≈ 16.7%
    2. White Dark
      #6d6e6d
      ΔE = 5.026 / LRV ≈ 15.5%
  83. AMC

    1. Bali Blue
      #60707f
      ΔE = 4.564 / LRV ≈ 15.6%
    2. Slate Blue
      #647580
      ΔE = 4.574 / LRV ≈ 17.0%
  84. Olympic

    1. Silent Night D55-5
      #526870
      ΔE = 4.566 / LRV ≈ 12.9%
    2. Cracked State D44-5
      #686569
      ΔE = 4.738 / LRV ≈ 13.3%
  85. Marston & Langinger

    1. Lead Grey
      #666666 / #666
      ΔE = 4.596 / LRV ≈ 13.3%
  86. Beckers

    1. Stål 516 / S 6000-N
      #666666 / #666
      ΔE = 4.596 / LRV ≈ 13.3%
  87. Volkswagen

    1. Atlas Gray
      #576e7a
      ΔE = 4.601 / LRV ≈ 14.6%
    2. Gemini Gray
      #707070
      ΔE = 5.032 / LRV ≈ 16.2%
  88. Fender

    1. 14 / Flat Charcoal
      #656565
      ΔE = 4.746 / LRV ≈ 13.0%
  89. Dupont

    1. CAS934
      #585f66
      ΔE = 4.798 / LRV ≈ 11.2%
    2. CAS918
      #555f64
      ΔE = 5.184 / LRV ≈ 11.0%
  90. Tata

    1. Platinum Grey / 729
      #51636a
      ΔE = 4.909 / LRV ≈ 11.7%
  91. Volvo

    1. Baltic Sea Blue / 1619
      #556065
      ΔE = 4.910 / LRV ≈ 11.2%
  92. Peintures MF

    1. BD207-4
      #6a6a69
      ΔE = 4.965 / LRV ≈ 14.4%

#626b72 Esempi HTML e CSS

#626b72 primo piano

Il dolce far niente.

<p style="color: #626b72">…</p>

#626b72 sfondo

Una cena senza vino e come un giorno senza sole.

<p style="background-color: #626b72">…</p>

#626b72 ombra testo

La vita è un sogno.

<p style="text-shadow: 0.1em 0.1em 0.15em #626b72">…</p>

Grafico di composizione

Spazi dei colori

Decimale
6450034
Binario
01100010, 01101011, 01110010
Esadecimale
#626b72
LRV
≈ 14.3%
Esagono corto più vicino
#567 ΔE = 4.909
RGB
rgb(98, 107, 114)
RGBA
rgba(98, 107, 114, 1.0)
rg cromaticità
r: 0.307, g: 0.335, b: 0.357
RYB
rosso: 38.431%, giallo: 40.690%, blu: 44.706%
Android / android.graphics.Color
-10327182 / 0xff626b72
HSL
hsl(206, 8%, 42%)
HSLA
hsla(206, 8%, 42%, 1.0)
HSV / HSB
tonalità: 206° (206.250), saturazione: 14% (0.140), valore: 45% (0.447)
HSP
tonalità: 206.250, saturazione: 14.035%, luminosità percepita: 41.267%
HSLuv (HUSL)
H: 232.093, S: 16.822, L: 44.698
Cubehelix
H: -158.408, S: 0.093, L: 0.412
TSL
T: -2.092, S: 0.035, L: 0.412
CMYK
turchese: 14% (0.140), magenta: 6% (0.061), giallo: 0% (0.000), colore chiave: 55% (0.553)
CMY
turchese: 62% (0.616), magenta: 58% (0.580), giallo: 55% (0.553)
XYZ
X: 13.331, Y: 14.327, Z: 17.979
xyY
x: 0.292, y: 0.314, Y: 14.327
CIELab
L: 44.698, a: -1.844, b: -5.072
CIELuv
L: 44.698, u: -5.147, v: -6.610
CIELCH / LCHab
L: 44.698, C: 5.397, H: 250.023
CIELUV / LCHuv
L: 44.698, C: 8.378, H: 232.093
Hunter-Lab
L: 37.851, a: -3.370, b: -1.668
CIECAM02
J: 34.335, C: 10.049, h: 235.582, Q: 115.447, M: 8.787, s: 27.589, H: 297.775
OSA-UCS
leggerezza: -10.110, giallo: -0.925, verde: 0.650
LMS
L: 13.004, M: 15.049, S: 17.916
YCbCr
Y: 106.286, Cb: 132.405, Cr: 123.552
YCoCg
Y: 106.500, Cg: 0.500, Co: 20.500
YDbDr
Y: 105.107, Db: 13.381, Dr: 13.516
YPbPr
Y: 105.587, Pb: 4.535, Pr: -4.822
xvYCC
Y: 106.681, Cb: 131.984, Cr: 123.764
YIQ
Y: 105.107, I: -7.610, Q: 0.275
YUV
Y: 105.107, U: 4.377, V: -6.235
Sistema Munsell dei Colori
2.5PB 4/2 ΔE = 3.321
Colore del marchio
Southwest Airlines Deep Silver ΔE = 9.242

Colori casuali

Rosso

Verde

Blu