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Colour

#57A1E8

  • #57A1E8
  • Blue
  • Dark
  • Nearest: Cornflower blue

#57A1E8 is a blue with RGB values 87, 161, 232 and HSL 209°, 76%, 63%. It is a dark colour, so black text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#57A1E8#57A1E8
HEX#57A1E8
RGBrgb(87, 161, 232)
RGB (0–1)0.3412, 0.6314, 0.9098
RGB percentages34.1%, 63.1%, 91%
HSLhsl(209.4, 75.9%, 62.5%)
HSV / HSBhsv(209.4, 62.5%, 91%)
CMYK62.5%, 30.6%, 0%, 9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,743,080
CSS custom property--colour: #57A1E8;

Brightness & contrast

Relative luminance0.33342WCAG 2.x, 0 is black and 1 is white
Perceived brightness153.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.67:1
Contrast with white2.74:1WCAG normal text: Fail
Contrast with black7.67:1WCAG normal text: AAA
Greyscale equivalent#969696
Inverted#A85E17

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#82A4EBno red cones; affects about 1% of men; ΔE 9.5 from the original
Deuteranopia#6F96E7no green cones; the most common form, about 1% of men; ΔE 11.3 from the original
Tritanopia#00B2BAno blue cones; rare, and affects men and women equally; ΔE 42.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.74:1WCAG large text: Fail
Contrast with black, large text7.67:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 13.1Steel blue · ΔE 16.1Deep skyblue · ΔE 17.9Light skyblue · ΔE 22.7Dodgerblue · ΔE 24.3Sky blue · ΔE 29.1
Nearest named CSS colourCornflower blue (#6495ED)ΔE 13.1, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E89E57
Analogous#57E8E7, #5758E8
Triadic#E857A1, #A1E857
Split complementary#E85758, #E8E757
Tetradic#E757E8, #E89E57, #58E857

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DEECFA
Lighter +20%#B1D3F4
Lighter +10%#84BAEE
Darker −10%#2A88E2
Darker −20%#1A6EBF
Darker −30%#145492
Darker −40%#0E3A65
More saturated +25%#40A1FF
Less saturated −25%#6FA1D0

Channel breakdown

R87
G161
B232
Red87 (34.1%)
Green161 (63.1%)
Blue232 (91%)
Hue209.38°
Saturation (HSL)75.92%
Lightness62.55%
Dominant channelBlue
Hex per channelR 57 · G A1 · B E8

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Every value on this page was computed from “57a1e8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.