Colour
#12898B
- #12898B
- Cyan
- Dark
- Nearest: Dark cyan
#12898B is a cyan with RGB values 18, 137, 139 and HSL 181°, 77%, 31%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Dark cyan.
Colour values
#12898B#12898B
HEX#12898B
RGBrgb(18, 137, 139)
RGB (0–1)0.0706, 0.5373, 0.5451
RGB percentages7.1%, 53.7%, 54.5%
HSLhsl(181, 77.1%, 30.8%)
HSV / HSBhsv(181, 87.1%, 54.5%)
CMYK87.1%, 1.4%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,214,859
CSS custom property--colour: #12898B;
Brightness & contrast
Relative luminance0.19884WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.98:1
Contrast with white4.22:1WCAG normal text: Fail
Contrast with black4.98:1WCAG normal text: AA
Greyscale equivalent#707070
Inverted#ED7674
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.22:1WCAG large text: AA
Contrast with black, large text4.98:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#8B1412
Analogous#128B50, #124D8B
Triadic#8B1289, #898B12
Split complementary#8B124D, #8B5012
Tetradic#50128B, #8B1412, #4D8B12
Tints, shades & saturation
Channel breakdown
R18
G137
B139
Red18 (7.1%)
Green137 (53.7%)
Blue139 (54.5%)
Hue180.99°
Saturation (HSL)77.07%
Lightness30.78%
Dominant channelBlue
Hex per channelR 12 · G 89 · B 8B
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