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Recognised as Colour

#172CD2

  • #172CD2
  • Blue
  • Dark
  • Nearest: Medium blue

#172CD2 is a blue with RGB values 23, 44, 210 and HSL 233°, 80%, 46%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#172CD2#172CD2
HEX#172CD2
RGBrgb(23, 44, 210)
RGB (0–1)0.0902, 0.1725, 0.8235
RGB percentages9%, 17.3%, 82.4%
HSLhsl(233.3, 80.3%, 45.7%)
HSV / HSBhsv(233.3, 89%, 82.4%)
CMYK89%, 79%, 0%, 17.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,518,802
CSS custom property--colour: #172CD2;

Brightness & contrast

Relative luminance0.06637WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.02:1
Contrast with white9.02:1WCAG normal text: AAA
Contrast with black2.33:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#E8D32D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0052D7no red cones; affects about 1% of men; ΔE 25.8 from the original
Deuteranopia#003FCFno green cones; the most common form, about 1% of men; ΔE 14.7 from the original
Tritanopia#00607Fno blue cones; rare, and affects men and women equally; ΔE 90 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.02:1WCAG large text: AAA
Contrast with black, large text2.33:1WCAG large text: Fail

Named colours

Medium blue · ΔE 15.8Blue violet · ΔE 21.4Dark blue · ΔE 22.9Dark violet · ΔE 27.4Navy · ΔE 27.6Dark orchid · ΔE 29.3
Nearest named CSS colourMedium blue (#0000CD)ΔE 15.77, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D2BD17
Analogous#178AD2, #6017D2
Triadic#D2172C, #2CD217
Split complementary#D25F17, #8AD217
Tetradic#D2178A, #D2BD17, #17D260

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BDC4F8
Lighter +30%#8F9AF3
Lighter +20%#6171EE
Lighter +10%#3348E9
Darker −10%#1222A4
Darker −20%#0D1976
Darker −30%#080F48
Darker −40%#03051A
More saturated +25%#001AE9
Less saturated −25%#3443B5

Channel breakdown

R23
G44
B210
Red23 (9%)
Green44 (17.3%)
Blue210 (82.4%)
Hue233.26°
Saturation (HSL)80.26%
Lightness45.69%
Dominant channelBlue
Hex per channelR 17 · G 2C · B D2

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Every value on this page was computed from “172cd2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.