Recognised as Colour
#B5211A
- #B5211A
- Red
- Dark
- Nearest: Firebrick
#B5211A is a red with RGB values 181, 33, 26 and HSL 3°, 75%, 41%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#B5211A#B5211A
HEX#B5211A
RGBrgb(181, 33, 26)
RGB (0–1)0.7098, 0.1294, 0.102
RGB percentages71%, 12.9%, 10.2%
HSLhsl(2.7, 74.9%, 40.6%)
HSV / HSBhsv(2.7, 85.6%, 71%)
CMYK0%, 81.8%, 85.6%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,870,490
CSS custom property--colour: #B5211A;
Brightness & contrast
Relative luminance0.10986WCAG 2.x, 0 is black and 1 is white
Perceived brightness102.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.57:1
Contrast with white6.57:1WCAG normal text: AA
Contrast with black3.2:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#4ADEE5
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.57:1WCAG large text: AAA
Contrast with black, large text3.2:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1AAEB5
Analogous#B51A61, #B56E1A
Triadic#1AB521, #211AB5
Split complementary#1AB56F, #1A60B5
Tetradic#60B51A, #1AAEB5, #6F1AB5
Tints, shades & saturation
Channel breakdown
R181
G33
B26
Red181 (71%)
Green33 (12.9%)
Blue26 (10.2%)
Hue2.71°
Saturation (HSL)74.88%
Lightness40.59%
Dominant channelRed
Hex per channelR B5 · G 21 · B 1A
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