Colour
#103F39
- #103F39
- Cyan
- Dark
- Nearest: Dark slate grey
#103F39 is a cyan with RGB values 16, 63, 57 and HSL 172°, 59%, 15%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#103F39#103F39
HEX#103F39
RGBrgb(16, 63, 57)
RGB (0–1)0.0627, 0.2471, 0.2235
RGB percentages6.3%, 24.7%, 22.4%
HSLhsl(172.3, 59.5%, 15.5%)
HSV / HSBhsv(172.3, 74.6%, 24.7%)
CMYK74.6%, 0%, 9.5%, 75.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,064,761
CSS custom property--colour: #103F39;
Brightness & contrast
Relative luminance0.03961WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.72:1
Contrast with white11.72:1WCAG normal text: AAA
Contrast with black1.79:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#EFC0C6
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.72:1WCAG large text: AAA
Contrast with black, large text1.79:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3F1016
Analogous#103F22, #102E3F
Triadic#39103F, #3F3910
Split complementary#3F102E, #3F2110
Tetradic#22103F, #3F1016, #2E3F10
Tints, shades & saturation
Channel breakdown
R16
G63
B57
Red16 (6.3%)
Green63 (24.7%)
Blue57 (22.4%)
Hue172.34°
Saturation (HSL)59.49%
Lightness15.49%
Dominant channelGreen
Hex per channelR 10 · G 3F · B 39
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