Colour
#1F554F
- #1F554F
- Cyan
- Dark
- Nearest: Dark slate grey
#1F554F is a cyan with RGB values 31, 85, 79 and HSL 173°, 47%, 23%. It is a dark colour, so white text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#1F554F#1F554F
HEX#1F554F
RGBrgb(31, 85, 79)
RGB (0–1)0.1216, 0.3333, 0.3098
RGB percentages12.2%, 33.3%, 31%
HSLhsl(173.3, 46.6%, 22.7%)
HSV / HSBhsv(173.3, 63.5%, 33.3%)
CMYK63.5%, 0%, 7.1%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,053,455
CSS custom property--colour: #1F554F;
Brightness & contrast
Relative luminance0.07353WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.5:1
Contrast with white8.5:1WCAG normal text: AAA
Contrast with black2.47:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#E0AAB0
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.5:1WCAG large text: AAA
Contrast with black, large text2.47:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#551F25
Analogous#1F5534, #1F4055
Triadic#4F1F55, #554F1F
Split complementary#551F40, #55341F
Tetradic#341F55, #551F25, #40551F
Tints, shades & saturation
Channel breakdown
R31
G85
B79
Red31 (12.2%)
Green85 (33.3%)
Blue79 (31%)
Hue173.33°
Saturation (HSL)46.55%
Lightness22.75%
Dominant channelGreen
Hex per channelR 1F · G 55 · B 4F
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