Recognised as Colour
#1C31B4
- #1C31B4
- Blue
- Dark
- Nearest: Dark blue
#1C31B4 is a blue with RGB values 28, 49, 180 and HSL 232°, 73%, 41%. It is a dark colour, so white text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#1C31B4#1C31B4
HEX#1C31B4
RGBrgb(28, 49, 180)
RGB (0–1)0.1098, 0.1922, 0.7059
RGB percentages11%, 19.2%, 70.6%
HSLhsl(231.7, 73.1%, 40.8%)
HSV / HSBhsv(231.7, 84.4%, 70.6%)
CMYK84.4%, 72.8%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,847,732
CSS custom property--colour: #1C31B4;
Brightness & contrast
Relative luminance0.05739WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.78:1
Contrast with white9.78:1WCAG normal text: AAA
Contrast with black2.15:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#E3CE4B
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.78:1WCAG large text: AAA
Contrast with black, large text2.15:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#B49F1C
Analogous#1C7DB4, #531CB4
Triadic#B41C31, #31B41C
Split complementary#B4531C, #7DB41C
Tetradic#B41C7D, #B49F1C, #1CB453
Tints, shades & saturation
Channel breakdown
R28
G49
B180
Red28 (11%)
Green49 (19.2%)
Blue180 (70.6%)
Hue231.71°
Saturation (HSL)73.08%
Lightness40.78%
Dominant channelBlue
Hex per channelR 1C · G 31 · B B4
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