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Recognised as Colour

#5153AD

  • #5153AD
  • Blue
  • Dark
  • Nearest: Dark slateblue

#5153AD is a blue with RGB values 81, 83, 173 and HSL 239°, 36%, 50%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#5153AD#5153AD
HEX#5153AD
RGBrgb(81, 83, 173)
RGB (0–1)0.3176, 0.3255, 0.6784
RGB percentages31.8%, 32.5%, 67.8%
HSLhsl(238.7, 36.2%, 49.8%)
HSV / HSBhsv(238.7, 53.2%, 67.8%)
CMYK53.2%, 52%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,329,837
CSS custom property--colour: #5153AD;

Brightness & contrast

Relative luminance0.10953WCAG 2.x, 0 is black and 1 is white
Perceived brightness97 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.58:1
Contrast with white6.58:1WCAG normal text: AA
Contrast with black3.19:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#AEAC52

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2461B0no red cones; affects about 1% of men; ΔE 15.6 from the original
Deuteranopia#1859ABno green cones; the most common form, about 1% of men; ΔE 13.5 from the original
Tritanopia#296778no blue cones; rare, and affects men and women equally; ΔE 51.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.58:1WCAG large text: AAA
Contrast with black, large text3.19:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 10.9Slate blue · ΔE 15.5Royal blue · ΔE 18.7Rebecca purple · ΔE 19.1Medium purple · ΔE 19.5Midnight blue · ΔE 24.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 10.91, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ADAB51
Analogous#5181AD, #7D51AD
Triadic#AD5153, #53AD51
Split complementary#AD7D51, #81AD51
Tetradic#AD5181, #ADAB51, #51AD7D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DCDCEE
Lighter +30%#B9BADE
Lighter +20%#9697CE
Lighter +10%#7375BE
Darker −10%#41428A
Darker −20%#303268
Darker −30%#202145
Darker −40%#101022
More saturated +25%#3135CD
Less saturated −25%#71718D

Channel breakdown

R81
G83
B173
Red81 (31.8%)
Green83 (32.5%)
Blue173 (67.8%)
Hue238.7°
Saturation (HSL)36.22%
Lightness49.8%
Dominant channelBlue
Hex per channelR 51 · G 53 · B AD

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Every value on this page was computed from “5153ad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.