Recognised as Colour
#B7251A
- #B7251A
- Red
- Dark
- Nearest: Firebrick
#B7251A is a red with RGB values 183, 37, 26 and HSL 4°, 75%, 41%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#B7251A#B7251A
HEX#B7251A
RGBrgb(183, 37, 26)
RGB (0–1)0.7176, 0.1451, 0.102
RGB percentages71.8%, 14.5%, 10.2%
HSLhsl(4.2, 75.1%, 41%)
HSV / HSBhsv(4.2, 85.8%, 71.8%)
CMYK0%, 79.8%, 85.8%, 28.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,002,586
CSS custom property--colour: #B7251A;
Brightness & contrast
Relative luminance0.11465WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.38:1
Contrast with white6.38:1WCAG normal text: AA
Contrast with black3.29:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#48DAE5
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.38:1WCAG large text: AAA
Contrast with black, large text3.29:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1AACB7
Analogous#B71A5E, #B7731A
Triadic#1AB725, #251AB7
Split complementary#1AB774, #1A5DB7
Tetradic#5DB71A, #1AACB7, #731AB7
Tints, shades & saturation
Channel breakdown
R183
G37
B26
Red183 (71.8%)
Green37 (14.5%)
Blue26 (10.2%)
Hue4.2°
Saturation (HSL)75.12%
Lightness40.98%
Dominant channelRed
Hex per channelR B7 · G 25 · B 1A
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