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Recognised as Colour

#539CEE

  • #539CEE
  • Blue
  • Dark
  • Nearest: Cornflower blue

#539CEE is a blue with RGB values 83, 156, 238 and HSL 212°, 82%, 63%. It is a dark colour, so black text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#539CEE#539CEE
HEX#539CEE
RGBrgb(83, 156, 238)
RGB (0–1)0.3255, 0.6118, 0.9333
RGB percentages32.5%, 61.2%, 93.3%
HSLhsl(211.7, 82%, 62.9%)
HSV / HSBhsv(211.7, 65.1%, 93.3%)
CMYK65.1%, 34.5%, 0%, 6.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,479,662
CSS custom property--colour: #539CEE;

Brightness & contrast

Relative luminance0.31789WCAG 2.x, 0 is black and 1 is white
Perceived brightness151 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.36:1
Contrast with white2.85:1WCAG normal text: Fail
Contrast with black7.36:1WCAG normal text: AAA
Greyscale equivalent#929292
Inverted#AC6311

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#78A1F1no red cones; affects about 1% of men; ΔE 7.2 from the original
Deuteranopia#6292ECno green cones; the most common form, about 1% of men; ΔE 8.5 from the original
Tritanopia#00AFBAno blue cones; rare, and affects men and women equally; ΔE 47.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.85:1WCAG large text: Fail
Contrast with black, large text7.36:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 7.1Dodgerblue · ΔE 17.6Steel blue · ΔE 20.1Deep skyblue · ΔE 22.9Light skyblue · ΔE 28.8Royal blue · ΔE 33.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 7.07, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EEA553
Analogous#53E9EE, #5853EE
Triadic#EE539C, #9CEE53
Split complementary#EE5853, #EAEE53
Tetradic#EE53E9, #EEA553, #53EE58

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DEECFC
Lighter +20%#B0D1F7
Lighter +10%#81B7F3
Darker −10%#2581E9
Darker −20%#1468C7
Darker −30%#0F5099
Darker −40%#0B386A
More saturated +25%#429BFF
Less saturated −25%#6B9DD6

Channel breakdown

R83
G156
B238
Red83 (32.5%)
Green156 (61.2%)
Blue238 (93.3%)
Hue211.74°
Saturation (HSL)82.01%
Lightness62.94%
Dominant channelBlue
Hex per channelR 53 · G 9C · B EE

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Every value on this page was computed from “539cee” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.