Colour
#0A373C
- #0A373C
- Cyan
- Dark
- Nearest: Dark slate grey
#0A373C is a cyan with RGB values 10, 55, 60 and HSL 186°, 71%, 14%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#0A373C#0A373C
HEX#0A373C
RGBrgb(10, 55, 60)
RGB (0–1)0.0392, 0.2157, 0.2353
RGB percentages3.9%, 21.6%, 23.5%
HSLhsl(186, 71.4%, 13.7%)
HSV / HSBhsv(186, 83.3%, 23.5%)
CMYK83.3%, 8.3%, 0%, 76.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer669,500
CSS custom property--colour: #0A373C;
Brightness & contrast
Relative luminance0.03123WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.93:1
Contrast with white12.93:1WCAG normal text: AAA
Contrast with black1.62:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#F5C8C3
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.93:1WCAG large text: AAA
Contrast with black, large text1.62:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3C0F0A
Analogous#0A3C28, #0A1E3C
Triadic#3C0A37, #373C0A
Split complementary#3C0A1E, #3C280A
Tetradic#280A3C, #3C0F0A, #1E3C0A
Tints, shades & saturation
Channel breakdown
R10
G55
B60
Red10 (3.9%)
Green55 (21.6%)
Blue60 (23.5%)
Hue186°
Saturation (HSL)71.43%
Lightness13.73%
Dominant channelBlue
Hex per channelR 0A · G 37 · B 3C
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