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Recognised as Colour

#57A5EC

  • #57A5EC
  • Blue
  • Dark
  • Nearest: Cornflower blue

#57A5EC is a blue with RGB values 87, 165, 236 and HSL 209°, 80%, 63%. It is a dark colour, so black text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#57A5EC#57A5EC
HEX#57A5EC
RGBrgb(87, 165, 236)
RGB (0–1)0.3412, 0.6471, 0.9255
RGB percentages34.1%, 64.7%, 92.5%
HSLhsl(208.6, 79.7%, 63.3%)
HSV / HSBhsv(208.6, 63.1%, 92.5%)
CMYK63.1%, 30.1%, 0%, 7.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,744,108
CSS custom property--colour: #57A5EC;

Brightness & contrast

Relative luminance0.34993WCAG 2.x, 0 is black and 1 is white
Perceived brightness156.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8:1
Contrast with white2.63:1WCAG normal text: Fail
Contrast with black8:1WCAG normal text: AAA
Greyscale equivalent#9A9A9A
Inverted#A85A13

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#86A8EFno red cones; affects about 1% of men; ΔE 10.4 from the original
Deuteranopia#7299EBno green cones; the most common form, about 1% of men; ΔE 12.4 from the original
Tritanopia#00B6BEno blue cones; rare, and affects men and women equally; ΔE 42.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.63:1WCAG large text: Fail
Contrast with black, large text8:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 14.1Deep skyblue · ΔE 16.5Steel blue · ΔE 17Light skyblue · ΔE 21.6Dodgerblue · ΔE 25Sky blue · ΔE 28.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 14.14, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EC9E57
Analogous#57ECE9, #575AEC
Triadic#EC57A5, #A5EC57
Split complementary#EC575A, #ECE957
Tetradic#E957EC, #EC9E57, #5AEC57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E0EFFC
Lighter +20%#B3D6F6
Lighter +10%#85BEF1
Darker −10%#298CE7
Darker −20%#1673C7
Darker −30%#115899
Darker −40%#0C3E6B
More saturated +25%#44A6FF
Less saturated −25%#6EA4D5

Channel breakdown

R87
G165
B236
Red87 (34.1%)
Green165 (64.7%)
Blue236 (92.5%)
Hue208.59°
Saturation (HSL)79.68%
Lightness63.33%
Dominant channelBlue
Hex per channelR 57 · G A5 · B EC

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Every value on this page was computed from “57a5ec” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.