Recognised as Colour
#172CAD
- #172CAD
- Blue
- Dark
- Nearest: Dark blue
#172CAD is a blue with RGB values 23, 44, 173 and HSL 232°, 77%, 38%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#172CAD#172CAD
HEX#172CAD
RGBrgb(23, 44, 173)
RGB (0–1)0.0902, 0.1725, 0.6784
RGB percentages9%, 17.3%, 67.8%
HSLhsl(231.6, 76.5%, 38.4%)
HSV / HSBhsv(231.6, 86.7%, 67.8%)
CMYK86.7%, 74.6%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,518,765
CSS custom property--colour: #172CAD;
Brightness & contrast
Relative luminance0.05001WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.5:1
Contrast with white10.5:1WCAG normal text: AAA
Contrast with black2:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#E8D352
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.5:1WCAG large text: AAA
Contrast with black, large text2:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#AD9817
Analogous#1777AD, #4D17AD
Triadic#AD172C, #2CAD17
Split complementary#AD4D17, #77AD17
Tetradic#AD1777, #AD9817, #17AD4D
Tints, shades & saturation
Channel breakdown
R23
G44
B173
Red23 (9%)
Green44 (17.3%)
Blue173 (67.8%)
Hue231.6°
Saturation (HSL)76.53%
Lightness38.43%
Dominant channelBlue
Hex per channelR 17 · G 2C · B AD
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