Recognised as Colour
#BB171A
- #BB171A
- Red
- Dark
- Nearest: Firebrick
#BB171A is a red with RGB values 187, 23, 26 and HSL 359°, 78%, 41%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#BB171A#BB171A
HEX#BB171A
RGBrgb(187, 23, 26)
RGB (0–1)0.7333, 0.0902, 0.102
RGB percentages73.3%, 9%, 10.2%
HSLhsl(358.9, 78.1%, 41.2%)
HSV / HSBhsv(358.9, 87.7%, 73.3%)
CMYK0%, 87.7%, 86.1%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,261,146
CSS custom property--colour: #BB171A;
Brightness & contrast
Relative luminance0.11252WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.46:1
Contrast with white6.46:1WCAG normal text: AA
Contrast with black3.25:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#44E8E5
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.46:1WCAG large text: AAA
Contrast with black, large text3.25:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#17BBB8
Analogous#BB176C, #BB6617
Triadic#1ABB17, #171ABB
Split complementary#17BB66, #176CBB
Tetradic#6CBB17, #17BBB8, #6617BB
Tints, shades & saturation
Channel breakdown
R187
G23
B26
Red187 (73.3%)
Green23 (9%)
Blue26 (10.2%)
Hue358.9°
Saturation (HSL)78.1%
Lightness41.18%
Dominant channelRed
Hex per channelR BB · G 17 · B 1A
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