Recognised as Colour
#BF310D
- #BF310D
- Red
- Dark
- Nearest: Firebrick
#BF310D is a red with RGB values 191, 49, 13 and HSL 12°, 87%, 40%. 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
#BF310D#BF310D
HEX#BF310D
RGBrgb(191, 49, 13)
RGB (0–1)0.749, 0.1922, 0.051
RGB percentages74.9%, 19.2%, 5.1%
HSLhsl(12.1, 87.3%, 40%)
HSV / HSBhsv(12.1, 93.2%, 74.9%)
CMYK0%, 74.3%, 93.2%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,529,933
CSS custom property--colour: #BF310D;
Brightness & contrast
Relative luminance0.13302WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.74:1
Contrast with white5.74:1WCAG normal text: AA
Contrast with black3.66:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#40CEF2
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.74:1WCAG large text: AAA
Contrast with black, large text3.66:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0D9BBF
Analogous#BF0D42, #BF8A0D
Triadic#0DBF31, #310DBF
Split complementary#0DBF8A, #0D42BF
Tetradic#42BF0D, #0D9BBF, #8A0DBF
Tints, shades & saturation
Channel breakdown
R191
G49
B13
Red191 (74.9%)
Green49 (19.2%)
Blue13 (5.1%)
Hue12.13°
Saturation (HSL)87.25%
Lightness40%
Dominant channelRed
Hex per channelR BF · G 31 · B 0D
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