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Recognised as Colour

#57ABE7

  • #57ABE7
  • Blue
  • Dark
  • Nearest: Deep skyblue

#57ABE7 is a blue with RGB values 87, 171, 231 and HSL 205°, 75%, 62%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#57ABE7#57ABE7
HEX#57ABE7
RGBrgb(87, 171, 231)
RGB (0–1)0.3412, 0.6706, 0.9059
RGB percentages34.1%, 67.1%, 90.6%
HSLhsl(205, 75%, 62.4%)
HSV / HSBhsv(205, 62.3%, 90.6%)
CMYK62.3%, 26%, 0%, 9.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,745,639
CSS custom property--colour: #57ABE7;

Brightness & contrast

Relative luminance0.36922WCAG 2.x, 0 is black and 1 is white
Perceived brightness159.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.38:1
Contrast with white2.5:1WCAG normal text: Fail
Contrast with black8.38:1WCAG normal text: AAA
Greyscale equivalent#9D9D9D
Inverted#A85418

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#90ACEAno red cones; affects about 1% of men; ΔE 14 from the original
Deuteranopia#7D9DE6no green cones; the most common form, about 1% of men; ΔE 16 from the original
Tritanopia#00BAC0no blue cones; rare, and affects men and women equally; ΔE 37 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.5:1WCAG large text: Fail
Contrast with black, large text8.38:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 12.4Light skyblue · ΔE 15.9Steel blue · ΔE 16.1Cornflower blue · ΔE 21.2Sky blue · ΔE 21.6Light steelblue · ΔE 25.9
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 12.38, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E79357
Analogous#57E7DB, #5763E7
Triadic#E757AB, #ABE757
Split complementary#E75763, #E7DB57
Tetradic#DB57E7, #E79357, #63E757

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DDEEFA
Lighter +20%#B0D8F4
Lighter +10%#84C1ED
Darker −10%#2A95E1
Darker −20%#1B7ABD
Darker −30%#155D90
Darker −40%#0E4064
More saturated +25%#3FAFFF
Less saturated −25%#6FA7CF

Channel breakdown

R87
G171
B231
Red87 (34.1%)
Green171 (67.1%)
Blue231 (90.6%)
Hue205°
Saturation (HSL)75%
Lightness62.35%
Dominant channelBlue
Hex per channelR 57 · G AB · B E7

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Every value on this page was computed from “57abe7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.