Colour
#21219B
- #21219B
- Blue
- Dark
- Nearest: Navy
#21219B is a blue with RGB values 33, 33, 155 and HSL 240°, 65%, 37%. It is a dark colour, so white text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Navy.
Colour values
#21219B#21219B
HEX#21219B
RGBrgb(33, 33, 155)
RGB (0–1)0.1294, 0.1294, 0.6078
RGB percentages12.9%, 12.9%, 60.8%
HSLhsl(240, 64.9%, 36.9%)
HSV / HSBhsv(240, 78.7%, 60.8%)
CMYK78.7%, 78.7%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,171,291
CSS custom property--colour: #21219B;
Brightness & contrast
Relative luminance0.03778WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.96:1
Contrast with white11.96:1WCAG normal text: AAA
Contrast with black1.76:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#DEDE64
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.96:1WCAG large text: AAA
Contrast with black, large text1.76:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#9B9B21
Analogous#215E9B, #5E219B
Triadic#9B2121, #219B21
Split complementary#9B5E21, #5E9B21
Tetradic#9B215E, #9B9B21, #219B5E
Tints, shades & saturation
Channel breakdown
R33
G33
B155
Red33 (12.9%)
Green33 (12.9%)
Blue155 (60.8%)
Hue240°
Saturation (HSL)64.89%
Lightness36.86%
Dominant channelBlue
Hex per channelR 21 · G 21 · B 9B
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