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Colour

#0031C8

  • #0031C8
  • Blue
  • Dark
  • Nearest: Dark blue

#0031C8 is a blue with RGB values 0, 49, 200 and HSL 225°, 100%, 39%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#0031C8#0031C8
HEX#0031C8
RGBrgb(0, 49, 200)
RGB (0–1)0, 0.1922, 0.7843
RGB percentages0%, 19.2%, 78.4%
HSLhsl(225.3, 100%, 39.2%)
HSV / HSBhsv(225.3, 100%, 78.4%)
CMYK100%, 75.5%, 0%, 21.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,744
CSS custom property--colour: #0031C8;

Brightness & contrast

Relative luminance0.06367WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.24:1
Contrast with white9.24:1WCAG normal text: AAA
Contrast with black2.27:1WCAG normal text: Fail
Greyscale equivalent#313131
Inverted#FFCE37

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0051CCno red cones; affects about 1% of men; ΔE 23 from the original
Deuteranopia#003EC5no green cones; the most common form, about 1% of men; ΔE 11.1 from the original
Tritanopia#005F7Bno blue cones; rare, and affects men and women equally; ΔE 83.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.24:1WCAG large text: AAA
Contrast with black, large text2.27:1WCAG large text: Fail

Named colours

Dark blue · ΔE 19.2Navy · ΔE 22.9Medium blue · ΔE 23.3Blue violet · ΔE 25.5Medium slateblue · ΔE 26.9Indigo · ΔE 28.4
Nearest named CSS colourDark blue (#00008B)ΔE 19.23, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C89700
Analogous#0095C8, #3300C8
Triadic#C80031, #31C800
Split complementary#C83300, #95C800
Tetradic#C80095, #C89700, #00C833

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#95AFFF
Lighter +30%#6288FF
Lighter +20%#2F62FF
Lighter +10%#003DFB
Darker −10%#002595
Darker −20%#001862
Darker −30%#000C2F
Darker −40%#000000
More saturated +25%#0031C8
Less saturated −25%#193EAF

Channel breakdown

R0
G49
B200
Red0 (0%)
Green49 (19.2%)
Blue200 (78.4%)
Hue225.3°
Saturation (HSL)100%
Lightness39.22%
Dominant channelBlue
Hex per channelR 00 · G 31 · B C8

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Every value on this page was computed from “0031c8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.