Colour
#305D57
- #305D57
- Cyan
- Dark
- Nearest: Dark slate grey
#305D57 is a cyan with RGB values 48, 93, 87 and HSL 172°, 32%, 28%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#305D57#305D57
HEX#305D57
RGBrgb(48, 93, 87)
RGB (0–1)0.1882, 0.3647, 0.3412
RGB percentages18.8%, 36.5%, 34.1%
HSLhsl(172, 31.9%, 27.6%)
HSV / HSBhsv(172, 48.4%, 36.5%)
CMYK48.4%, 0%, 6.5%, 63.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,169,623
CSS custom property--colour: #305D57;
Brightness & contrast
Relative luminance0.09145WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.42:1
Contrast with white7.42:1WCAG normal text: AAA
Contrast with black2.83:1WCAG normal text: Fail
Greyscale equivalent#535353
Inverted#CFA2A8
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.42:1WCAG large text: AAA
Contrast with black, large text2.83:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#5D3036
Analogous#305D41, #304D5D
Triadic#57305D, #5D5730
Split complementary#5D304D, #5D4130
Tetradic#40305D, #5D3036, #4D5D30
Tints, shades & saturation
Channel breakdown
R48
G93
B87
Red48 (18.8%)
Green93 (36.5%)
Blue87 (34.1%)
Hue172°
Saturation (HSL)31.91%
Lightness27.65%
Dominant channelGreen
Hex per channelR 30 · G 5D · B 57
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