Recognised as Colour
#283D3B
- #283D3B
- Cyan
- Dark
- Nearest: Dark slate grey
#283D3B is a cyan with RGB values 40, 61, 59 and HSL 174°, 21%, 20%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#283D3B#283D3B
HEX#283D3B
RGBrgb(40, 61, 59)
RGB (0–1)0.1569, 0.2392, 0.2314
RGB percentages15.7%, 23.9%, 23.1%
HSLhsl(174.3, 20.8%, 19.8%)
HSV / HSBhsv(174.3, 34.4%, 23.9%)
CMYK34.4%, 0%, 3.3%, 76.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,637,115
CSS custom property--colour: #283D3B;
Brightness & contrast
Relative luminance0.04104WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.53:1
Contrast with white11.53:1WCAG normal text: AAA
Contrast with black1.82:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#D7C2C4
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.53:1WCAG large text: AAA
Contrast with black, large text1.82:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3D282A
Analogous#283D31, #28353D
Triadic#3B283D, #3D3B28
Split complementary#3D2835, #3D3128
Tetradic#30283D, #3D282A, #353D28
Tints, shades & saturation
Channel breakdown
R40
G61
B59
Red40 (15.7%)
Green61 (23.9%)
Blue59 (23.1%)
Hue174.29°
Saturation (HSL)20.79%
Lightness19.8%
Dominant channelGreen
Hex per channelR 28 · G 3D · B 3B
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