Colour
#2800A1
- #2800A1
- Blue
- Dark
- Nearest: Dark blue
#2800A1 is a blue with RGB values 40, 0, 161 and HSL 255°, 100%, 32%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#2800A1#2800A1
HEX#2800A1
RGBrgb(40, 0, 161)
RGB (0–1)0.1569, 0, 0.6314
RGB percentages15.7%, 0%, 63.1%
HSLhsl(254.9, 100%, 31.6%)
HSV / HSBhsv(254.9, 100%, 63.1%)
CMYK75.2%, 100%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,621,601
CSS custom property--colour: #2800A1;
Brightness & contrast
Relative luminance0.03024WCAG 2.x, 0 is black and 1 is white
Perceived brightness58.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.09:1
Contrast with white13.09:1WCAG normal text: AAA
Contrast with black1.6:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#D7FF5E
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.09:1WCAG large text: AAA
Contrast with black, large text1.6:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#79A100
Analogous#0029A1, #7800A1
Triadic#A12800, #00A128
Split complementary#A17800, #29A100
Tetradic#A10029, #79A100, #00A178
Tints, shades & saturation
Channel breakdown
R40
G0
B161
Red40 (15.7%)
Green0 (0%)
Blue161 (63.1%)
Hue254.91°
Saturation (HSL)100%
Lightness31.57%
Dominant channelBlue
Hex per channelR 28 · G 00 · B A1
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