Colour
#171F1F
- #171F1F
- Cyan
- Dark
- Nearest: Black
#171F1F is a cyan with RGB values 23, 31, 31 and HSL 180°, 15%, 11%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#171F1F#171F1F
HEX#171F1F
RGBrgb(23, 31, 31)
RGB (0–1)0.0902, 0.1216, 0.1216
RGB percentages9%, 12.2%, 12.2%
HSLhsl(180, 14.8%, 10.6%)
HSV / HSBhsv(180, 25.8%, 12.2%)
CMYK25.8%, 0%, 0%, 87.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,515,295
CSS custom property--colour: #171F1F;
Brightness & contrast
Relative luminance0.01261WCAG 2.x, 0 is black and 1 is white
Perceived brightness28.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.77:1
Contrast with white16.77:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#E8E0E0
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.77:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1F1717
Analogous#171F1B, #171B1F
Triadic#1F171F, #1F1F17
Split complementary#1F171B, #1F1B17
Tetradic#1B171F, #1F1717, #1B1F17
Tints, shades & saturation
Channel breakdown
R23
G31
B31
Red23 (9%)
Green31 (12.2%)
Blue31 (12.2%)
Hue180°
Saturation (HSL)14.81%
Lightness10.59%
Dominant channelGreen and Blue
Hex per channelR 17 · G 1F · B 1F
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