Encycolorpedia

Volkswagen Kasan Red / #b62c21 Codice Colore Hex

#b62c21 Paint ChipIl codice colore esadecimale #b62c21 è una sfumatura di rosso. Nel modello di colori RGB #b62c21 è composto di 71.37% rosso, 17.25% verde e 12.94% blu. Nel sistema di colori HSL #b62c21 ha una tonalità di 4° (gradi), 69% di saturazione e chiarezza del 42%. Il colore ha una lunghezza d'onda approssimativa di 607.78 nm.

Foto d'archivio / immagini

Risparmia il 15% sull'abbonamento mensile iStock con il codice MONTHLY15.

  1. Red peppers on white background
  2. Exhibition Porsche 911 car outdoors in Naples, June 30, 2016. Italy.
  3. Soviet Union Flag Crisis

Variazioni di colore

Nomi colori correlati

Combinazioni di colori

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

#b62c21 gradiente lineare al complementare #009ed7

  1. #b62c21
  2. #b0463e
  3. #a85b5b
  4. #9b6d79
  5. #877e97
  6. #678eb7
  7. #009ed7

Colori monocromatici

  1. #a01211
  2. #a71c16
  3. #af241c
  4. #b62c21
  5. #bd3326
  6. #c53a2c
  7. #cc4131

Toni di colore

  1. #b62c21
  2. #ad3d2e
  3. #a3493a
  4. #985346
  5. #8c5c53
  6. #7d655f
  7. #6c6c6c

Tinte e sfumature

#b62c21 al nero

  1. #b62c21
  2. #c85442
  3. #d87765
  4. #e69989
  5. #f1bbaf
  6. #faddd6
  7. #ffffff / #fff

#b62c21 al bianco

  1. #b62c21
  2. #96281d
  3. #772319
  4. #5a1e15
  5. #3d1710
  6. #231009
  7. #000000 / #000

Vernici

Vernici corrispondenti

Pitture simili

  1. Pantone / PMS

    1. ★ 2350 CP
      #b52c1f
      ΔE = 0.473 / LRV ≈ 11.7%
    2. 18-1655 TCX / Mars Red
      #bc2732
      ΔE = 4.685 / LRV ≈ 12.4%
  2. GM / General Motors

    1. ★ Bolero Red
      #b42c22
      ΔE = 0.526 / LRV ≈ 11.6%
    2. Santa Fe Red
      #ad3733
      ΔE = 3.836 / LRV ≈ 11.9%
  3. Volkswagen

    1. ★ Mars Red
      #b22e20
      ΔE = 0.847 / LRV ≈ 11.5%
    2. Laser Red
      #c70e20
      ΔE = 3.622 / LRV ≈ 12.6%
  4. Apple Barrel

    1. ★ Flag Red / 21469
      #b72c26
      ΔE = 1.165 / LRV ≈ 12.0%
    2. Cardinal Crimson / 20590
      #c01225
      ΔE = 3.648 / LRV ≈ 11.8%
  5. Caparol

    1. ★ 1861
      #b83020
      ΔE = 1.199 / LRV ≈ 12.4%
    2. 45 50 10 / Rose 95
      #bc1420
      ΔE = 2.823 / LRV ≈ 11.3%
  6. Matthews Paint

    1. ★ Red Ferrari / 15394
      #b9221e
      ΔE = 1.223 / LRV ≈ 11.6%
    2. Texas Scarlet / 15430
      #c31e1e
      ΔE = 2.504 / LRV ≈ 12.6%
  7. Chrysler

    1. ★ Tango Red
      #bb221b
      ΔE = 1.359 / LRV ≈ 11.8%
    2. ★ Flame Red
      #bb2a25
      ΔE = 1.383 / LRV ≈ 12.4%
  8. Little Greene

    1. ★ Atomic Red
      #bd2520
      ΔE = 1.377 / LRV ≈ 12.2%
    2. Firefly
      #af2426
      ΔE = 3.344 / LRV ≈ 10.5%
  9. Sikkens

    1. ★ C5.69.34 (RAL 3020)
      #b92219
      ΔE = 1.462 / LRV ≈ 11.5%
    2. ★ C6.65.35
      #ae2c1e
      ΔE = 1.794 / LRV ≈ 10.9%
  10. Natural Color System / NCS

    1. ★ S 2570-Y70R
      #b3301b
      ΔE = 1.846 / LRV ≈ 11.8%
    2. ★ S 2070-Y90R
      #ba2a28
      ΔE = 1.907 / LRV ≈ 12.3%
  11. Graham & Brown

    1. ★ Double Decker Bus
      #b92928
      ΔE = 1.986 / LRV ≈ 12.1%
  12. Sanderson

    1. ★ Carmen Lt
      #be3026
      ΔE = 2.136 / LRV ≈ 13.2%
    2. Bengal Red
      #ac2b18
      ΔE = 2.747 / LRV ≈ 10.6%
  13. Loop

    1. ★ Newcastle / LP-138
      #be2c1c
      ΔE = 2.183 / LRV ≈ 12.8%
    2. York / LP-139
      #a6241c
      ΔE = 4.239 / LRV ≈ 9.5%
  14. Australian Standard AS2700

    1. ★ R13 Signal Red
      #ba302b
      ΔE = 2.188 / LRV ≈ 12.7%
    2. R24 Strawberry
      #b4282a
      ΔE = 2.883 / LRV ≈ 11.4%
  15. AMC

    1. Bright Red
      #b52224
      ΔE = 2.362 / LRV ≈ 11.1%
    2. Oriental Red
      #aa2b25
      ΔE = 3.079 / LRV ≈ 10.4%
  16. Crayola

    1. Christmas Red
      #b22222
      ΔE = 2.473 / LRV ≈ 10.7%
  17. Games Workshop - Citadel

    1. Evil Sunz Scarlet
      #c2191f
      ΔE = 2.573 / LRV ≈ 12.3%
  18. Dutch Boy

    1. Crayola Red
      #af382e
      ΔE = 2.579 / LRV ≈ 12.1%
    2. Red Energy
      #ab3c21
      ΔE = 3.560 / LRV ≈ 12.0%
  19. Colorhouse

    1. Create .04
      #b8352e
      ΔE = 2.582 / LRV ≈ 12.9%
    2. Petal .06
      #ba4133
      ΔE = 4.422 / LRV ≈ 14.5%
  20. Valspar Paint

    1. Pedicure At Lunch
      #ad322b
      ΔE = 2.588 / LRV ≈ 11.3%
    2. Tomato Red
      #b61500
      ΔE = 4.798 / LRV ≈ 10.5%
  21. Humbrol

    1. 60 Scarlet
      #ba131d
      ΔE = 2.713 / LRV ≈ 11.0%
    2. 153 Insignia Red
      #b2101b
      ΔE = 3.855 / LRV ≈ 9.9%
  22. Federal Standard

    1. Federal Standard 11105
      #ae2825
      ΔE = 2.725 / LRV ≈ 10.7%
    2. Federal Standard 21105
      #b90f21
      ΔE = 3.593 / LRV ≈ 10.8%
  23. Duron

    1. Tanager
      #c32826
      ΔE = 2.815 / LRV ≈ 13.3%
    2. Cherry Tomato
      #c62b27
      ΔE = 3.514 / LRV ≈ 13.9%
  24. Dulux

    1. Volcanic Splash 3
      #b5322f
      ΔE = 2.856 / LRV ≈ 12.3%
    2. Red Beacon
      #c23433
      ΔE = 4.491 / LRV ≈ 14.2%
  25. Audi

    1. Laserrot / H1, LY3H
      #bc2110
      ΔE = 2.869 / LRV ≈ 11.8%
    2. Sundown Orange / LB2A, Z7Z7
      #b7422a
      ΔE = 4.326 / LRV ≈ 14.1%
  26. Farrow & Ball

    1. Blazer / 212
      #ae372f
      ΔE = 2.870 / LRV ≈ 11.9%
  27. Sigma

    1. Warm Red / S 1580-Y90R
      #b03b30
      ΔE = 2.922 / LRV ≈ 12.6%
    2. Warm Red / 3020
      #ba3b2d
      ΔE = 3.162 / LRV ≈ 13.8%
  28. Ford

    1. Rio Red
      #b12022
      ΔE = 2.942 / LRV ≈ 10.5%
    2. Red Solid
      #c51f1a
      ΔE = 2.983 / LRV ≈ 12.9%
  29. Auro

    1. Copper Beech
      #a8341f
      ΔE = 2.954 / LRV ≈ 10.9%
  30. Tollens

    1. T2072-4
      #bb0c1c
      ΔE = 3.069 / LRV ≈ 10.9%
    2. Rouge arsenal | EE157
      #b2101d
      ΔE = 4.014 / LRV ≈ 9.9%
  31. Sherwin-Williams

    1. Red Obsession - 7590
      #b63731
      ΔE = 3.083 / LRV ≈ 12.9%
    2. Scarlet - 2907
      #b5001a
      ΔE = 4.314 / LRV ≈ 9.9%
  32. Resene

    1. Del Toro R46-119-032
      #b11d20
      ΔE = 3.102 / LRV ≈ 10.3%
    2. Bonfire R45-110-038
      #a62a20
      ΔE = 3.688 / LRV ≈ 9.9%
  33. ICI Paints

    1. 3208 Flaming Sword 19YR 13/558
      #af3530
      ΔE = 3.148 / LRV ≈ 11.9%
    2. 3209 O'Hara 19YR 14/629
      #bc3330
      ΔE = 3.300 / LRV ≈ 13.3%
  34. Fender

    1. 25 / Chrome Red
      #b4151c
      ΔE = 3.155 / LRV ≈ 10.3%
    2. 58 / Torino Red
      #bf0010
      ΔE = 3.493 / LRV ≈ 11.1%
  35. Toyo Ink

    1. CF10097
      #b9232a
      ΔE = 3.209 / LRV ≈ 11.7%
    2. CF10115
      #a63231
      ΔE = 4.914 / LRV ≈ 10.6%
  36. Crown Paint

    1. Red Carpet
      #c32a2a
      ΔE = 3.260 / LRV ≈ 13.4%
    2. Scooter Red
      #c13b36
      ΔE = 5.022 / LRV ≈ 14.7%
  37. Evonik-Degussa

    1. 263A Cotillion Red
      #b13933
      ΔE = 3.463 / LRV ≈ 12.5%
    2. 223A Glowing Ember
      #a3442e
      ΔE = 4.779 / LRV ≈ 12.1%
  38. Testors

    1. Testors 1801
      #bc001a
      ΔE = 3.513 / LRV ≈ 10.8%
    2. Testors 1152
      #c60027
      ΔE = 4.882 / LRV ≈ 12.2%
  39. Behr

    1. PMD-85 Crimsom Silk
      #af3632
      ΔE = 3.531 / LRV ≈ 12.0%
    2. Candied Cherry PPKR-24
      #c33832
      ΔE = 4.611 / LRV ≈ 14.7%
  40. Pratt & Lambert

    1. Orange Bead 6-16
      #ab3c21
      ΔE = 3.560 / LRV ≈ 12.0%
    2. Our Classic 4-13
      #ac322f
      ΔE = 3.586 / LRV ≈ 11.3%
  41. Jedynka

    1. Piros
      #c41324
      ΔE = 3.567 / LRV ≈ 12.3%
  42. RAL

    1. RAL 3000 / Flame Red
      #a72920
      ΔE = 3.578 / LRV ≈ 9.9%
    2. RAL 2002 / Vermilion
      #bf3922
      ΔE = 3.886 / LRV ≈ 14.1%
  43. Taubmans

    1. Red Ross / T12 24.H4
      #b93733
      ΔE = 3.639 / LRV ≈ 13.3%
    2. Matlock Brown / T12 24.H5
      #a54334
      ΔE = 4.553 / LRV ≈ 12.3%
  44. Bristol

    1. Red Ross / P061-W7
      #b93733
      ΔE = 3.639 / LRV ≈ 13.3%
    2. Matlock Brown / P058-W6
      #a54334
      ΔE = 4.553 / LRV ≈ 12.3%
  45. Dulux Australia

    1. Signal Red R13 / O39
      #c32f2d
      ΔE = 3.663 / LRV ≈ 13.8%
    2. Sunset Blaze / D6
      #a04234
      ΔE = 5.016 / LRV ≈ 11.6%
  46. Beckers

    1. Vallmo 686 / 1676-Y87R
      #b81509
      ΔE = 3.668 / LRV ≈ 10.7%
  47. Revell

    1. Revell 37131
      #ab1f1c
      ΔE = 3.730 / LRV ≈ 9.7%
  48. Flügger

    1. Kina (U-608)
      #a43d2a
      ΔE = 3.761 / LRV ≈ 11.4%
    2. French Kiss (IN-786)
      #cd0719
      ΔE = 4.444 / LRV ≈ 13.2%
  49. Coronado Paint

    1. AC120 - Red Red
      #b83c34
      ΔE = 3.848 / LRV ≈ 13.7%
    2. 8093 - Pointers Red
      #c03636
      ΔE = 4.817 / LRV ≈ 14.1%
  50. Nippon Paint

    1. Cotillion Red / NP AC 2071 A
      #b43d35
      ΔE = 3.859 / LRV ≈ 13.3%
  51. Opaltone / OMS

    1. 4547
      #b43e35
      ΔE = 3.899 / LRV ≈ 13.4%
    2. 4534
      #b24137
      ΔE = 4.332 / LRV ≈ 13.5%
  52. 1Shot / One Shot

    1. 104L Bright Red
      #b11620
      ΔE = 3.942 / LRV ≈ 10.0%
    2. 102L Fire Red
      #cf1920
      ΔE = 4.781 / LRV ≈ 14.1%
  53. Delta

    1. Cardinal Red / 020770202W
      #b01116
      ΔE = 3.957 / LRV ≈ 9.7%
    2. Napthol Red Light / 024090202W
      #c8142b
      ΔE = 4.900 / LRV ≈ 13.0%
  54. Scib Paints

    1. Red Red / AC120
      #c4342d
      ΔE = 4.018 / LRV ≈ 14.4%
    2. High Society / AC116
      #aa4832
      ΔE = 5.079 / LRV ≈ 13.4%
  55. Berger

    1. Red Red / AC120
      #c4342d
      ΔE = 4.018 / LRV ≈ 14.4%
    2. Leaf Rust / AC118
      #a0392f
      ΔE = 4.693 / LRV ≈ 10.6%
  56. TRUMATCH

    1. 5-a3
      #c9001e
      ΔE = 4.056 / LRV ≈ 12.5%
    2. 6-a4
      #be0006
      ΔE = 4.214 / LRV ≈ 11.0%
  57. Vista Paint

    1. Lipstick Pencil
      #bd2e32
      ΔE = 4.057 / LRV ≈ 13.0%
    2. High Society
      #aa4832
      ΔE = 5.079 / LRV ≈ 13.4%
  58. Plascon

    1. Just Terracotta R7-C1-1
      #b02c0c
      ΔE = 4.057 / LRV ≈ 11.1%
    2. Fuscia Fizz R2-A1-1
      #c4102c
      ΔE = 5.123 / LRV ≈ 12.3%
  59. Dunn-Edwards

    1. Hot Jazz / 1258
      #bc3033
      ΔE = 4.112 / LRV ≈ 13.0%
    2. Glitzy Red / 1069
      #af413b
      ΔE = 5.029 / LRV ≈ 13.2%
  60. Dupont

    1. CAS78
      #bb1829
      ΔE = 4.112 / LRV ≈ 11.4%
    2. CAS126
      #b52800
      ΔE = 5.189 / LRV ≈ 11.3%
  61. California Paints

    1. DEA 106 - Red Contrast
      #b33234
      ΔE = 4.232 / LRV ≈ 12.1%
    2. DEA 151 - Red Ink
      #ac3235
      ΔE = 5.082 / LRV ≈ 11.3%
  62. Focoltone

    1. 1082
      #bc0006
      ΔE = 4.236 / LRV ≈ 10.7%
    2. 7023
      #c50006
      ΔE = 4.527 / LRV ≈ 11.9%
  63. Fabric Creations

    1. Poppy / 25977
      #b10d0e
      ΔE = 4.251 / LRV ≈ 9.7%
  64. Magnolia Home

    1. Brave And Bold / JG-32
      #a62c29
      ΔE = 4.312 / LRV ≈ 10.1%
    2. Hopscotch / JG-31
      #ab3f38
      ΔE = 4.579 / LRV ≈ 12.5%
  65. Brillux

    1. 24.24.24
      #a94335
      ΔE = 4.363 / LRV ≈ 12.7%
    2. 27.21.24
      #b33639
      ΔE = 5.137 / LRV ≈ 12.5%
  66. Lascaux

    1. Transoxide red / 171
      #be3f2f
      ΔE = 4.416 / LRV ≈ 14.7%
    2. Cadmium­ red deep / 128
      #b72e35
      ΔE = 4.813 / LRV ≈ 12.3%
  67. ProMarker

    1. Burnt Orange
      #c92c2c
      ΔE = 4.505 / LRV ≈ 14.4%
  68. Mylands of London

    1. Bright Red
      #cc251c
      ΔE = 4.558 / LRV ≈ 14.2%
    2. Dark Red
      #a73333
      ΔE = 5.064 / LRV ≈ 10.8%
  69. Johnstone's Paint

    1. Signal Red
      #b13737
      ΔE = 4.581 / LRV ≈ 12.4%
  70. Designers Guild

    1. Ladybird
      #a91c11
      ΔE = 4.583 / LRV ≈ 9.3%
  71. FolkArt

    1. Barnyard Red / 611
      #ba3637
      ΔE = 4.626 / LRV ≈ 13.4%
    2. Christmas Red / 958
      #cb312b
      ΔE = 5.022 / LRV ≈ 15.1%
  72. Old Citadel

    1. Blood Red
      #ce0018
      ΔE = 4.666 / LRV ≈ 13.2%
  73. Rackham

    1. Rackham Red (36)
      #ce0018
      ΔE = 4.666 / LRV ≈ 13.2%
  74. Vallejo Game Color

    1. Bloody Red (010)
      #ce0018
      ΔE = 4.666 / LRV ≈ 13.2%
  75. Reaper Master

    1. Clear Red (9094)
      #ce0018
      ΔE = 4.666 / LRV ≈ 13.2%
  76. Vallejo Model Color

    1. Vermillion (909)
      #ce0018
      ΔE = 4.666 / LRV ≈ 13.2%
  77. Wattyl

    1. Firefly / C59W
      #ae3a38
      ΔE = 4.707 / LRV ≈ 12.3%
    2. Red Barron / C58W
      #bf3d36
      ΔE = 4.892 / LRV ≈ 14.7%
  78. Vallejo

    1. Vallejo 70.947 #29
      #a54336
      ΔE = 4.736 / LRV ≈ 12.3%
  79. British Standard

    1. BS381 564 - Bold red
      #ba3f38
      ΔE = 4.805 / LRV ≈ 14.3%
    2. BS381 537 - Signal red
      #bb4039
      ΔE = 5.105 / LRV ≈ 14.5%
  80. Porter Paints

    1. Rum Punch / 231-7
      #ae413a
      ΔE = 4.845 / LRV ≈ 13.1%
  81. Levis

    1. Clear Orange A80
      #a23530
      ΔE = 4.936 / LRV ≈ 10.4%
  82. Devoe Paint

    1. Chile / 26YR 14/548
      #af4737
      ΔE = 4.966 / LRV ≈ 13.9%
    2. Crimson Red / 31YR 10/591
      #a63b37
      ΔE = 5.055 / LRV ≈ 11.5%
  83. Glidden

    1. Rum Punch / PPG1190-7
      #aa423a
      ΔE = 4.976 / LRV ≈ 12.8%
  84. PPG Pittsburgh Paints

    1. Rum Punch / PPG1190-7
      #aa423a
      ΔE = 4.976 / LRV ≈ 12.8%
  85. Benjamin Moore

    1. Ruby Red / 2001-10
      #cb2d2d
      ΔE = 4.983 / LRV ≈ 14.8%
    2. Red / 2000-10
      #ca2f2f
      ΔE = 5.055 / LRV ≈ 14.8%
  86. Clark+Kensington

    1. Apple of My Eye / 08C-7
      #b83e3a
      ΔE = 5.004 / LRV ≈ 13.9%
    2. Tango Red / 07C-7
      #ae3839
      ΔE = 5.167 / LRV ≈ 12.1%
  87. Peintures MF

    1. Moulin Rouge
      #c23836
      ΔE = 5.044 / LRV ≈ 14.6%
  88. Steel Primer Paste (Dtm)

    1. Ral Gelborange Mat / 2000
      #b62600
      ΔE = 5.059 / LRV ≈ 11.3%
  89. Iveco

    1. Arancio / 52132
      #b21500
      ΔE = 5.084 / LRV ≈ 10.0%
  90. CIL

    1. Chile
      #ac4739
      ΔE = 5.106 / LRV ≈ 13.6%
  91. Vauxhall

    1. Brilliant Orange / 509
      #af2101
      ΔE = 5.121 / LRV ≈ 10.2%
  92. Fleet

    1. A.m.n.u Giallo Arancio / SGI22007
      #b02100
      ΔE = 5.172 / LRV ≈ 10.3%
  93. Zoffany

    1. Venetian Red
      #a03e35
      ΔE = 5.181 / LRV ≈ 11.2%
  94. Kelly-Moore

    1. Safety Red / 562
      #ab3f3b
      ΔE = 5.220 / LRV ≈ 12.5%
  95. Kansai Paint

    1. Signal Red
      #aa403b
      ΔE = 5.223 / LRV ≈ 12.5%

Simulazione daltonismo

Monochromacy

Dichromacy

Tricromazia

#b62c21 Esempi HTML e CSS

#b62c21 primo piano

Mangia bene, ridi spesso, ama molto.

<p style="color: #b62c21">…</p>

#b62c21 sfondo

Belle parole non pascon i gatti.

<p style="background-color: #b62c21">…</p>

#b62c21 ombra testo

Aiutati che Dio t’aiuta.

<p style="text-shadow: 0.1em 0.1em 0.15em #b62c21">…</p>

Grafico di composizione

Spazi dei colori

Decimale
11938849
Binario
10110110, 00101100, 00100001
Esadecimale
#b62c21
LRV
≈ 11.9%
Esagono corto più vicino
#b22 ΔE = 1.599
RGB
rgb(182, 44, 33)
RGBA
rgba(182, 44, 33, 1.0)
rg cromaticità
r: 0.703, g: 0.170, b: 0.127
RYB
rosso: 71.373%, giallo: 17.599%, blu: 12.941%
Android / android.graphics.Color
-4838367 / 0xffb62c21
HSL
hsl(4, 69%, 42%)
HSLA
hsla(4, 69%, 42%, 1.0)
HSV / HSB
tonalità: 4° (4.430), saturazione: 82% (0.819), valore: 71% (0.714)
HSP
tonalità: 4.430, saturazione: 81.868%, luminosità percepita: 41.436%
HSLuv (HUSL)
H: 13.836, S: 85.816, L: 40.992
Cubehelix
H: -3.788, S: 1.042, L: 0.330
TSL
T: 3.872, S: 0.542, L: 0.329
CMYK
turchese: 0% (0.000), magenta: 76% (0.758), giallo: 82% (0.819), colore chiave: 29% (0.286)
CMY
turchese: 29% (0.286), magenta: 83% (0.827), giallo: 87% (0.871)
XYZ
X: 20.469, Y: 11.860, Z: 2.650
xyY
x: 0.585, y: 0.339, Y: 11.860
CIELab
L: 40.992, a: 54.047, b: 40.303
CIELuv
L: 40.992, u: 106.056, v: 26.120
CIELCH / LCHab
L: 40.992, C: 67.420, H: 36.712
CIELUV / LCHuv
L: 40.992, C: 109.225, H: 13.836
Hunter-Lab
L: 34.438, a: 45.831, b: 19.544
CIECAM02
J: 33.719, C: 73.446, h: 30.112, Q: 114.405, M: 64.227, s: 74.927, H: 12.717
OSA-UCS
leggerezza: -9.771, giallo: 4.964, verde: -10.098
LMS
L: 19.664, M: 5.746, S: 2.829
YCbCr
Y: 88.184, Cb: 102.747, Cr: 189.363
YCoCg
Y: 75.750, Cg: -31.750, Co: 82.750
YDbDr
Y: 84.008, Db: -76.763, Dr: -186.341
YPbPr
Y: 72.602, Pb: -21.370, Pr: 69.506
xvYCC
Y: 78.352, Cb: 109.228, Cr: 189.056
YIQ
Y: 84.008, I: 85.743, Q: 25.758
YUV
Y: 84.008, U: -25.099, V: 85.970
Sistema Munsell dei Colori
7.5R 4/14 ΔE = 2.312
Colore del marchio
LastFM ΔE = 3.289

Colori casuali

Rosso

Verde

Blu