Recognised as Colour
#278A9A
- #278A9A
- Cyan
- Dark
- Nearest: Dark cyan
#278A9A is a cyan with RGB values 39, 138, 154 and HSL 188°, 60%, 38%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Dark cyan.
Colour values
#278A9A#278A9A
HEX#278A9A
RGBrgb(39, 138, 154)
RGB (0–1)0.1529, 0.5412, 0.6039
RGB percentages15.3%, 54.1%, 60.4%
HSLhsl(188.3, 59.6%, 37.8%)
HSV / HSBhsv(188.3, 74.7%, 60.4%)
CMYK74.7%, 10.4%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,591,386
CSS custom property--colour: #278A9A;
Brightness & contrast
Relative luminance0.20941WCAG 2.x, 0 is black and 1 is white
Perceived brightness119.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.19:1
Contrast with white4.05:1WCAG normal text: Fail
Contrast with black5.19:1WCAG normal text: AA
Greyscale equivalent#767676
Inverted#D87565
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.05:1WCAG large text: AA
Contrast with black, large text5.19:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#9A3727
Analogous#279A70, #27519A
Triadic#9A278A, #8A9A27
Split complementary#9A2751, #9A7027
Tetradic#71279A, #9A3727, #519A27
Tints, shades & saturation
Channel breakdown
R39
G138
B154
Red39 (15.3%)
Green138 (54.1%)
Blue154 (60.4%)
Hue188.35°
Saturation (HSL)59.59%
Lightness37.84%
Dominant channelBlue
Hex per channelR 27 · G 8A · B 9A
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