Recognised as Colour
#173C42
- #173C42
- Cyan
- Dark
- Nearest: Dark slate grey
#173C42 is a cyan with RGB values 23, 60, 66 and HSL 188°, 48%, 17%. It is a dark colour, so white text on it reaches 11.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#173C42#173C42
HEX#173C42
RGBrgb(23, 60, 66)
RGB (0–1)0.0902, 0.2353, 0.2588
RGB percentages9%, 23.5%, 25.9%
HSLhsl(188.4, 48.3%, 17.5%)
HSV / HSBhsv(188.4, 65.2%, 25.9%)
CMYK65.2%, 9.1%, 0%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,522,754
CSS custom property--colour: #173C42;
Brightness & contrast
Relative luminance0.03807WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.92:1
Contrast with white11.92:1WCAG normal text: AAA
Contrast with black1.76:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#E8C3BD
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.92:1WCAG large text: AAA
Contrast with black, large text1.76:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#421D17
Analogous#174233, #172642
Triadic#42173C, #3C4217
Split complementary#421726, #423317
Tetradic#331742, #421D17, #264217
Tints, shades & saturation
Channel breakdown
R23
G60
B66
Red23 (9%)
Green60 (23.5%)
Blue66 (25.9%)
Hue188.37°
Saturation (HSL)48.31%
Lightness17.45%
Dominant channelBlue
Hex per channelR 17 · G 3C · B 42
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page