Recognised as Colour
#BC180A
- #BC180A
- Red
- Dark
- Nearest: Firebrick
#BC180A is a red with RGB values 188, 24, 10 and HSL 5°, 90%, 39%. 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
#BC180A#BC180A
HEX#BC180A
RGBrgb(188, 24, 10)
RGB (0–1)0.7373, 0.0941, 0.0392
RGB percentages73.7%, 9.4%, 3.9%
HSLhsl(4.7, 89.9%, 38.8%)
HSV / HSBhsv(4.7, 94.7%, 73.7%)
CMYK0%, 87.2%, 94.7%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,326,922
CSS custom property--colour: #BC180A;
Brightness & contrast
Relative luminance0.11367WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.42:1
Contrast with white6.42:1WCAG normal text: AA
Contrast with black3.27:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#43E7F5
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.42:1WCAG large text: AAA
Contrast with black, large text3.27:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0AAEBC
Analogous#BC0A55, #BC710A
Triadic#0ABC18, #180ABC
Split complementary#0ABC71, #0A55BC
Tetradic#55BC0A, #0AAEBC, #710ABC
Tints, shades & saturation
Channel breakdown
R188
G24
B10
Red188 (73.7%)
Green24 (9.4%)
Blue10 (3.9%)
Hue4.72°
Saturation (HSL)89.9%
Lightness38.82%
Dominant channelRed
Hex per channelR BC · G 18 · B 0A
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