Recognised as Colour
#043F42
- #043F42
- Cyan
- Dark
- Nearest: Dark slate grey
#043F42 is a cyan with RGB values 4, 63, 66 and HSL 183°, 89%, 14%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#043F42#043F42
HEX#043F42
RGBrgb(4, 63, 66)
RGB (0–1)0.0157, 0.2471, 0.2588
RGB percentages1.6%, 24.7%, 25.9%
HSLhsl(182.9, 88.6%, 13.7%)
HSV / HSBhsv(182.9, 93.9%, 25.9%)
CMYK93.9%, 4.5%, 0%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer278,338
CSS custom property--colour: #043F42;
Brightness & contrast
Relative luminance0.03974WCAG 2.x, 0 is black and 1 is white
Perceived brightness53.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.7:1
Contrast with white11.7:1WCAG normal text: AAA
Contrast with black1.79:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#FBC0BD
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.7:1WCAG large text: AAA
Contrast with black, large text1.79:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#420704
Analogous#044226, #042042
Triadic#42043F, #3F4204
Split complementary#420420, #422604
Tetradic#260442, #420704, #204204
Tints, shades & saturation
Channel breakdown
R4
G63
B66
Red4 (1.6%)
Green63 (24.7%)
Blue66 (25.9%)
Hue182.9°
Saturation (HSL)88.57%
Lightness13.73%
Dominant channelBlue
Hex per channelR 04 · G 3F · B 42
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