Colour
#172DB5
- #172DB5
- Blue
- Dark
- Nearest: Dark blue
#172DB5 is a blue with RGB values 23, 45, 181 and HSL 232°, 77%, 40%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#172DB5#172DB5
HEX#172DB5
RGBrgb(23, 45, 181)
RGB (0–1)0.0902, 0.1765, 0.7098
RGB percentages9%, 17.6%, 71%
HSLhsl(231.6, 77.5%, 40%)
HSV / HSBhsv(231.6, 87.3%, 71%)
CMYK87.3%, 75.1%, 0%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,519,029
CSS custom property--colour: #172DB5;
Brightness & contrast
Relative luminance0.05395WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.1:1
Contrast with white10.1:1WCAG normal text: AAA
Contrast with black2.08:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#E8D24A
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.1:1WCAG large text: AAA
Contrast with black, large text2.08:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#B59F17
Analogous#177CB5, #5017B5
Triadic#B5172D, #2DB517
Split complementary#B55017, #7CB517
Tetradic#B5177C, #B59F17, #17B550
Tints, shades & saturation
Channel breakdown
R23
G45
B181
Red23 (9%)
Green45 (17.6%)
Blue181 (71%)
Hue231.65°
Saturation (HSL)77.45%
Lightness40%
Dominant channelBlue
Hex per channelR 17 · G 2D · B B5
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