Colour
#173F43
- #173F43
- Cyan
- Dark
- Nearest: Dark slate grey
#173F43 is a cyan with RGB values 23, 63, 67 and HSL 185°, 49%, 18%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#173F43#173F43
HEX#173F43
RGBrgb(23, 63, 67)
RGB (0–1)0.0902, 0.2471, 0.2627
RGB percentages9%, 24.7%, 26.3%
HSLhsl(185.5, 48.9%, 17.6%)
HSV / HSBhsv(185.5, 65.7%, 26.3%)
CMYK65.7%, 6%, 0%, 73.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,523,523
CSS custom property--colour: #173F43;
Brightness & contrast
Relative luminance0.04142WCAG 2.x, 0 is black and 1 is white
Perceived brightness54.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.48:1
Contrast with white11.48:1WCAG normal text: AAA
Contrast with black1.83:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#E8C0BC
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.48:1WCAG large text: AAA
Contrast with black, large text1.83:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#431B17
Analogous#174331, #172943
Triadic#43173F, #3F4317
Split complementary#431729, #433117
Tetradic#311743, #431B17, #294317
Tints, shades & saturation
Channel breakdown
R23
G63
B67
Red23 (9%)
Green63 (24.7%)
Blue67 (26.3%)
Hue185.45°
Saturation (HSL)48.89%
Lightness17.65%
Dominant channelBlue
Hex per channelR 17 · G 3F · B 43
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