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Recognised as Colour

#0D3371

  • #0D3371
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0D3371 is a blue with RGB values 13, 51, 113 and HSL 217°, 79%, 25%. It is a dark colour, so white text on it reaches 12.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0D3371#0D3371
HEX#0D3371
RGBrgb(13, 51, 113)
RGB (0–1)0.051, 0.2, 0.4431
RGB percentages5.1%, 20%, 44.3%
HSLhsl(217.2, 79.4%, 24.7%)
HSV / HSBhsv(217.2, 88.5%, 44.3%)
CMYK88.5%, 54.9%, 0%, 55.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer865,137
CSS custom property--colour: #0D3371;

Brightness & contrast

Relative luminance0.03645WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.15:1
Contrast with white12.15:1WCAG normal text: AAA
Contrast with black1.73:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#F2CC8E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#053A73no red cones; affects about 1% of men; ΔE 5.7 from the original
Deuteranopia#003170no green cones; the most common form, about 1% of men; ΔE 1.4 from the original
Tritanopia#00424Cno blue cones; rare, and affects men and women equally; ΔE 39.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.15:1WCAG large text: AAA
Contrast with black, large text1.73:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.9Midnight blue · ΔE 22.5Rebecca purple · ΔE 32.8Steel blue · ΔE 35.2Slate blue · ΔE 37.4Royal blue · ΔE 38.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.91, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#714B0D
Analogous#0D6571, #190D71
Triadic#710D33, #33710D
Split complementary#71190D, #65710D
Tetradic#710D65, #714B0D, #0D7119

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5E94EC
Lighter +30%#3075E7
Lighter +20%#185CCC
Lighter +10%#12489F
Darker −10%#081E43
Darker −20%#020A16
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00307E
Less saturated −25%#1D3761

Channel breakdown

R13
G51
B113
Red13 (5.1%)
Green51 (20%)
Blue113 (44.3%)
Hue217.2°
Saturation (HSL)79.37%
Lightness24.71%
Dominant channelBlue
Hex per channelR 0D · G 33 · B 71

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Every value on this page was computed from “0d3371” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.