Recognised as Colour
#37188E
- #37188E
- Violet
- Dark
- Nearest: Indigo
#37188E is a violet with RGB values 55, 24, 142 and HSL 256°, 71%, 33%. It is a dark colour, so white text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Indigo.
Colour values
#37188E#37188E
HEX#37188E
RGBrgb(55, 24, 142)
RGB (0–1)0.2157, 0.0941, 0.5569
RGB percentages21.6%, 9.4%, 55.7%
HSLhsl(255.8, 71.1%, 32.5%)
HSV / HSBhsv(255.8, 83.1%, 55.7%)
CMYK61.3%, 83.1%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,610,766
CSS custom property--colour: #37188E;
Brightness & contrast
Relative luminance0.03418WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.47:1
Contrast with white12.47:1WCAG normal text: AAA
Contrast with black1.68:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#C8E771
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.47:1WCAG large text: AAA
Contrast with black, large text1.68:1WCAG large text: Fail
Named colours
Hue familyviolet
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#6F8E18
Analogous#18348E, #72188E
Triadic#8E3718, #188E37
Split complementary#8E7218, #348E18
Tetradic#8E1834, #6F8E18, #188E72
Tints, shades & saturation
Channel breakdown
R55
G24
B142
Red55 (21.6%)
Green24 (9.4%)
Blue142 (55.7%)
Hue255.76°
Saturation (HSL)71.08%
Lightness32.55%
Dominant channelBlue
Hex per channelR 37 · G 18 · B 8E
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