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Recognised as Colour

#B2431D

  • #B2431D
  • Orange
  • Dark
  • Nearest: Firebrick

#B2431D is a orange with RGB values 178, 67, 29 and HSL 15°, 72%, 41%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B2431D#B2431D
HEX#B2431D
RGBrgb(178, 67, 29)
RGB (0–1)0.698, 0.2627, 0.1137
RGB percentages69.8%, 26.3%, 11.4%
HSLhsl(15.3, 72%, 40.6%)
HSV / HSBhsv(15.3, 83.7%, 69.8%)
CMYK0%, 62.4%, 83.7%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,682,589
CSS custom property--colour: #B2431D;

Brightness & contrast

Relative luminance0.13568WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.65:1
Contrast with white5.65:1WCAG normal text: AA
Contrast with black3.71:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#4DBCE2

Colour vision & accessibility

Protanopia#635717no red cones; affects about 1% of men; ΔE 47.4 from the original
Deuteranopia#7E7018no green cones; the most common form, about 1% of men; ΔE 47.9 from the original
Tritanopia#C4263Cno blue cones; rare, and affects men and women equally; ΔE 24.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.65:1WCAG large text: AAA
Contrast with black, large text3.71:1WCAG large text: AA

Named colours

Nearest named CSS colourFirebrick (#B22222)ΔE 14.99, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#1D8CB2
Analogous#B21D41, #B28E1D
Triadic#1DB243, #431DB2
Split complementary#1DB28E, #1D41B2
Tetradic#42B21D, #1D8CB2, #8E1DB2

Tints, shades & saturation

Lighter +40%#F1BCAA
Lighter +30%#EA9A7E
Lighter +20%#E37752
Lighter +10%#DC5526
Darker −10%#863216
Darker −20%#5A220F
Darker −30%#2E1108
Darker −40%#030100
More saturated +25%#CC3603
Less saturated −25%#985037

Channel breakdown

R178
G67
B29
Red178 (69.8%)
Green67 (26.3%)
Blue29 (11.4%)
Hue15.3°
Saturation (HSL)71.98%
Lightness40.59%
Dominant channelRed
Hex per channelR B2 · G 43 · B 1D

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Every value on this page was computed from “b2431d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.