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Recognised as Colour

#0D2251

  • #0D2251
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0D2251 is a blue with RGB values 13, 34, 81 and HSL 221°, 72%, 18%. It is a dark colour, so white text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0D2251#0D2251
HEX#0D2251
RGBrgb(13, 34, 81)
RGB (0–1)0.051, 0.1333, 0.3176
RGB percentages5.1%, 13.3%, 31.8%
HSLhsl(221.5, 72.3%, 18.4%)
HSV / HSBhsv(221.5, 84%, 31.8%)
CMYK84%, 58%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer860,753
CSS custom property--colour: #0D2251;

Brightness & contrast

Relative luminance0.01824WCAG 2.x, 0 is black and 1 is white
Perceived brightness38.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.39:1
Contrast with white15.39:1WCAG normal text: AAA
Contrast with black1.36:1WCAG normal text: Fail
Greyscale equivalent#212121
Inverted#F2DDAE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#022853no red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#002250no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#002D35no blue cones; rare, and affects men and women equally; ΔE 31.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.39:1WCAG large text: AAA
Contrast with black, large text1.36:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 24.5Midnight blue · ΔE 27.4Black · ΔE 36.2Dark slate grey · ΔE 39.6Rebecca purple · ΔE 39.8Steel blue · ΔE 41
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.49, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#513C0D
Analogous#0D4451, #1A0D51
Triadic#510D22, #22510D
Split complementary#511A0D, #44510D
Tetradic#510D44, #513C0D, #0D511A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4878E2
Lighter +30%#2259D5
Lighter +20%#1B47A9
Lighter +10%#14347D
Darker −10%#061025
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#011E5D
Less saturated −25%#192645

Channel breakdown

R13
G34
B81
Red13 (5.1%)
Green34 (13.3%)
Blue81 (31.8%)
Hue221.47°
Saturation (HSL)72.34%
Lightness18.43%
Dominant channelBlue
Hex per channelR 0D · G 22 · B 51

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Every value on this page was computed from “0d2251” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.