Colour
#633D31
- #633D31
- Red
- Dark
- Nearest: Dim grey
#633D31 is a red with RGB values 99, 61, 49 and HSL 14°, 34%, 29%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Dim grey.
Colour values
#633D31#633D31
HEX#633D31
RGBrgb(99, 61, 49)
RGB (0–1)0.3882, 0.2392, 0.1922
RGB percentages38.8%, 23.9%, 19.2%
HSLhsl(14.4, 33.8%, 29%)
HSV / HSBhsv(14.4, 50.5%, 38.8%)
CMYK0%, 38.4%, 50.5%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,503,729
CSS custom property--colour: #633D31;
Brightness & contrast
Relative luminance0.06212WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.37:1
Contrast with white9.37:1WCAG normal text: AAA
Contrast with black2.24:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#9CC2CE
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.37:1WCAG large text: AAA
Contrast with black, large text2.24:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#315763
Analogous#63313E, #635631
Triadic#31633D, #3D3163
Split complementary#316356, #313E63
Tetradic#3E6331, #315763, #563163
Tints, shades & saturation
Channel breakdown
R99
G61
B49
Red99 (38.8%)
Green61 (23.9%)
Blue49 (19.2%)
Hue14.4°
Saturation (HSL)33.78%
Lightness29.02%
Dominant channelRed
Hex per channelR 63 · G 3D · B 31
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