Colour
#172DA3
- #172DA3
- Blue
- Dark
- Nearest: Navy
#172DA3 is a blue with RGB values 23, 45, 163 and HSL 231°, 75%, 36%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Navy.
Colour values
#172DA3#172DA3
HEX#172DA3
RGBrgb(23, 45, 163)
RGB (0–1)0.0902, 0.1765, 0.6392
RGB percentages9%, 17.6%, 63.9%
HSLhsl(230.6, 75.3%, 36.5%)
HSV / HSBhsv(230.6, 85.9%, 63.9%)
CMYK85.9%, 72.4%, 0%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,519,011
CSS custom property--colour: #172DA3;
Brightness & contrast
Relative luminance0.04703WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.82:1
Contrast with white10.82:1WCAG normal text: AAA
Contrast with black1.94:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#E8D25C
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.82:1WCAG large text: AAA
Contrast with black, large text1.94:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#A38D17
Analogous#1773A3, #4717A3
Triadic#A3172D, #2DA317
Split complementary#A34717, #73A317
Tetradic#A31773, #A38D17, #17A347
Tints, shades & saturation
Channel breakdown
R23
G45
B163
Red23 (9%)
Green45 (17.6%)
Blue163 (63.9%)
Hue230.57°
Saturation (HSL)75.27%
Lightness36.47%
Dominant channelBlue
Hex per channelR 17 · G 2D · B A3
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