Colour
#1F8A8A
- #1F8A8A
- Cyan
- Dark
- Nearest: Dark cyan
#1F8A8A is a cyan with RGB values 31, 138, 138 and HSL 180°, 63%, 33%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Dark cyan.
Colour values
#1F8A8A#1F8A8A
HEX#1F8A8A
RGBrgb(31, 138, 138)
RGB (0–1)0.1216, 0.5412, 0.5412
RGB percentages12.2%, 54.1%, 54.1%
HSLhsl(180, 63.3%, 33.1%)
HSV / HSBhsv(180, 77.5%, 54.1%)
CMYK77.5%, 0%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,067,082
CSS custom property--colour: #1F8A8A;
Brightness & contrast
Relative luminance0.20303WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.06:1
Contrast with white4.15:1WCAG normal text: Fail
Contrast with black5.06:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#E07575
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.15:1WCAG large text: AA
Contrast with black, large text5.06:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#8A1F1F
Analogous#1F8A54, #1F548A
Triadic#8A1F8A, #8A8A1F
Split complementary#8A1F54, #8A541F
Tetradic#541F8A, #8A1F1F, #548A1F
Tints, shades & saturation
Channel breakdown
R31
G138
B138
Red31 (12.2%)
Green138 (54.1%)
Blue138 (54.1%)
Hue180°
Saturation (HSL)63.31%
Lightness33.14%
Dominant channelGreen and Blue
Hex per channelR 1F · G 8A · B 8A
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