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Recognised as Colour

#5251AB

  • #5251AB
  • Blue
  • Dark
  • Nearest: Dark slateblue

#5251AB is a blue with RGB values 82, 81, 171 and HSL 241°, 36%, 49%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#5251AB#5251AB
HEX#5251AB
RGBrgb(82, 81, 171)
RGB (0–1)0.3216, 0.3176, 0.6706
RGB percentages32.2%, 31.8%, 67.1%
HSLhsl(240.7, 35.7%, 49.4%)
HSV / HSBhsv(240.7, 52.6%, 67.1%)
CMYK52%, 52.6%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,394,859
CSS custom property--colour: #5251AB;

Brightness & contrast

Relative luminance0.10619WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.72:1
Contrast with white6.72:1WCAG normal text: AA
Contrast with black3.12:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#ADAE54

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#225FAEno red cones; affects about 1% of men; ΔE 16.1 from the original
Deuteranopia#1858A9no green cones; the most common form, about 1% of men; ΔE 14.4 from the original
Tritanopia#2E6576no blue cones; rare, and affects men and women equally; ΔE 50.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.72:1WCAG large text: AAA
Contrast with black, large text3.12:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 10.2Slate blue · ΔE 15.3Rebecca purple · ΔE 18.1Royal blue · ΔE 19.1Medium purple · ΔE 19.5Midnight blue · ΔE 23.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 10.24, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AAAB51
Analogous#517DAB, #7F51AB
Triadic#AB5251, #51AB52
Split complementary#AB7F51, #7DAB51
Tetradic#AB517D, #AAAB51, #51AB7F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DBDAEE
Lighter +30%#B8B8DD
Lighter +20%#9695CD
Lighter +10%#7373BC
Darker −10%#414188
Darker −20%#313066
Darker −30%#202043
Darker −40%#100F21
More saturated +25%#3331CB
Less saturated −25%#71718B

Channel breakdown

R82
G81
B171
Red82 (32.2%)
Green81 (31.8%)
Blue171 (67.1%)
Hue240.67°
Saturation (HSL)35.71%
Lightness49.41%
Dominant channelBlue
Hex per channelR 52 · G 51 · B AB

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Every value on this page was computed from “5251ab” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.