Colour
#BB0100
- #BB0100
- Red
- Dark
- Nearest: Firebrick
#BB0100 is a red with RGB values 187, 1, 0 and HSL 0°, 100%, 37%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#BB0100#BB0100
HEX#BB0100
RGBrgb(187, 1, 0)
RGB (0–1)0.7333, 0.0039, 0
RGB percentages73.3%, 0.4%, 0%
HSLhsl(0.3, 100%, 36.7%)
HSV / HSBhsv(0.3, 100%, 73.3%)
CMYK0%, 99.5%, 100%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,255,488
CSS custom property--colour: #BB0100;
Brightness & contrast
Relative luminance0.10587WCAG 2.x, 0 is black and 1 is white
Perceived brightness102.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.74:1
Contrast with white6.74:1WCAG normal text: AA
Contrast with black3.12:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#44FEFF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.74:1WCAG large text: AAA
Contrast with black, large text3.12:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#00BABB
Analogous#BB005D, #BB5E00
Triadic#00BB01, #0100BB
Split complementary#00BB5F, #005DBB
Tetradic#5DBB00, #00BABB, #5E00BB
Tints, shades & saturation
Channel breakdown
R187
G1
B0
Red187 (73.3%)
Green1 (0.4%)
Blue0 (0%)
Hue0.32°
Saturation (HSL)100%
Lightness36.67%
Dominant channelRed
Hex per channelR BB · G 01 · B 00
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