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Colour

#51457E

  • #51457E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#51457E is a blue with RGB values 81, 69, 126 and HSL 253°, 29%, 38%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#51457E#51457E
HEX#51457E
RGBrgb(81, 69, 126)
RGB (0–1)0.3176, 0.2706, 0.4941
RGB percentages31.8%, 27.1%, 49.4%
HSLhsl(252.6, 29.2%, 38.2%)
HSV / HSBhsv(252.6, 45.2%, 49.4%)
CMYK35.7%, 45.2%, 0%, 50.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,326,206
CSS custom property--colour: #51457E;

Brightness & contrast

Relative luminance0.07512WCAG 2.x, 0 is black and 1 is white
Perceived brightness81 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.39:1
Contrast with white8.39:1WCAG normal text: AAA
Contrast with black2.5:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#AEBA81

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#324E80no red cones; affects about 1% of men; ΔE 13.4 from the original
Deuteranopia#344C7Dno green cones; the most common form, about 1% of men; ΔE 12.7 from the original
Tritanopia#46505Bno blue cones; rare, and affects men and women equally; ΔE 30.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.39:1WCAG large text: AAA
Contrast with black, large text2.5:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.5Midnight blue · ΔE 28.4Rebecca purple · ΔE 28.8Steel blue · ΔE 30.5Medium purple · ΔE 34.2Slate blue · ΔE 34.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.47, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#727E45
Analogous#45557E, #6E457E
Triadic#7E5145, #457E51
Split complementary#7E6E45, #557E45
Tetradic#7E4555, #727E45, #457E6E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BEB7D8
Lighter +30%#A096C6
Lighter +20%#8275B4
Lighter +10%#66579F
Darker −10%#3C335D
Darker −20%#27213C
Darker −30%#110F1B
Darker −40%#000000
More saturated +25%#432D96
Less saturated −25%#5F5D66

Channel breakdown

R81
G69
B126
Red81 (31.8%)
Green69 (27.1%)
Blue126 (49.4%)
Hue252.63°
Saturation (HSL)29.23%
Lightness38.24%
Dominant channelBlue
Hex per channelR 51 · G 45 · B 7E

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Every value on this page was computed from “51457e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.