Recognised as Colour
#D31604
- #D31604
- Red
- Dark
- Nearest: Orange red
#D31604 is a red with RGB values 211, 22, 4 and HSL 5°, 96%, 42%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#D31604#D31604
HEX#D31604
RGBrgb(211, 22, 4)
RGB (0–1)0.8275, 0.0863, 0.0157
RGB percentages82.7%, 8.6%, 1.6%
HSLhsl(5.2, 96.3%, 42.2%)
HSV / HSBhsv(5.2, 98.1%, 82.7%)
CMYK0%, 89.6%, 98.1%, 17.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,833,732
CSS custom property--colour: #D31604;
Brightness & contrast
Relative luminance0.14431WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.4:1
Contrast with white5.4:1WCAG normal text: AA
Contrast with black3.89:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#2CE9FB
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.4:1WCAG large text: AAA
Contrast with black, large text3.89:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#04C1D3
Analogous#D3045A, #D37D04
Triadic#04D316, #1604D3
Split complementary#04D37D, #045AD3
Tetradic#5AD304, #04C1D3, #7D04D3
Tints, shades & saturation
Channel breakdown
R211
G22
B4
Red211 (82.7%)
Green22 (8.6%)
Blue4 (1.6%)
Hue5.22°
Saturation (HSL)96.28%
Lightness42.16%
Dominant channelRed
Hex per channelR D3 · G 16 · B 04
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