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Recognised as Colour

#031C66

  • #031C66
  • Blue
  • Dark
  • Nearest: Midnight blue

#031C66 is a blue with RGB values 3, 28, 102 and HSL 225°, 94%, 21%. It is a dark colour, so white text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#031C66#031C66
HEX#031C66
RGBrgb(3, 28, 102)
RGB (0–1)0.0118, 0.1098, 0.4
RGB percentages1.2%, 11%, 40%
HSLhsl(224.8, 94.3%, 20.6%)
HSV / HSBhsv(224.8, 97.1%, 40%)
CMYK97.1%, 72.5%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer203,878
CSS custom property--colour: #031C66;

Brightness & contrast

Relative luminance0.01809WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.42:1
Contrast with white15.42:1WCAG normal text: AAA
Contrast with black1.36:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#FCE399

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002968no red cones; affects about 1% of men; ΔE 11 from the original
Deuteranopia#002065no green cones; the most common form, about 1% of men; ΔE 4.3 from the original
Tritanopia#00313Eno blue cones; rare, and affects men and women equally; ΔE 47.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.42:1WCAG large text: AAA
Contrast with black, large text1.36:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.8Dark slateblue · ΔE 16.8Rebecca purple · ΔE 26.4Indigo · ΔE 29.3Navy · ΔE 30.4Dark blue · ΔE 35.2
Nearest named CSS colourMidnight blue (#191970)ΔE 8.81, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#664D03
Analogous#034D66, #1C0366
Triadic#66031C, #1C6603
Split complementary#661C03, #4D6603
Tetradic#66034D, #664D03, #03661C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3C6CF9
Lighter +30%#0A46F8
Lighter +20%#0637C9
Lighter +10%#042A98
Darker −10%#020E34
Darker −20%#000103
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001B69
Less saturated −25%#102259

Channel breakdown

R3
G28
B102
Red3 (1.2%)
Green28 (11%)
Blue102 (40%)
Hue224.85°
Saturation (HSL)94.29%
Lightness20.59%
Dominant channelBlue
Hex per channelR 03 · G 1C · B 66

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Every value on this page was computed from “031c66” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.