Colour
#21453E
- #21453E
- Cyan
- Dark
- Nearest: Dark slate grey
#21453E is a cyan with RGB values 33, 69, 62 and HSL 168°, 35%, 20%. It is a dark colour, so white text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#21453E#21453E
HEX#21453E
RGBrgb(33, 69, 62)
RGB (0–1)0.1294, 0.2706, 0.2431
RGB percentages12.9%, 27.1%, 24.3%
HSLhsl(168.3, 35.3%, 20%)
HSV / HSBhsv(168.3, 52.2%, 27.1%)
CMYK52.2%, 0%, 10.1%, 72.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,180,414
CSS custom property--colour: #21453E;
Brightness & contrast
Relative luminance0.04927WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.58:1
Contrast with white10.58:1WCAG normal text: AAA
Contrast with black1.99:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#DEBAC1
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.58:1WCAG large text: AAA
Contrast with black, large text1.99:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#452128
Analogous#21452C, #213A45
Triadic#3E2145, #453E21
Split complementary#45213A, #452C21
Tetradic#2C2145, #452128, #3A4521
Tints, shades & saturation
Channel breakdown
R33
G69
B62
Red33 (12.9%)
Green69 (27.1%)
Blue62 (24.3%)
Hue168.33°
Saturation (HSL)35.29%
Lightness20%
Dominant channelGreen
Hex per channelR 21 · G 45 · B 3E
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