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Recognised as Colour

#57A8D2

  • #57A8D2
  • Blue
  • Dark
  • Nearest: Light skyblue

#57A8D2 is a blue with RGB values 87, 168, 210 and HSL 200°, 58%, 58%. It is a dark colour, so black text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#57A8D2#57A8D2
HEX#57A8D2
RGBrgb(87, 168, 210)
RGB (0–1)0.3412, 0.6588, 0.8235
RGB percentages34.1%, 65.9%, 82.4%
HSLhsl(200.5, 57.7%, 58.2%)
HSV / HSBhsv(200.5, 58.6%, 82.4%)
CMYK58.6%, 20%, 0%, 17.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,744,850
CSS custom property--colour: #57A8D2;

Brightness & contrast

Relative luminance0.34685WCAG 2.x, 0 is black and 1 is white
Perceived brightness154.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.94:1
Contrast with white2.65:1WCAG normal text: Fail
Contrast with black7.94:1WCAG normal text: AAA
Greyscale equivalent#9A9A9A
Inverted#A8572D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#94A6D4no red cones; affects about 1% of men; ΔE 17.4 from the original
Deuteranopia#8399D1no green cones; the most common form, about 1% of men; ΔE 18.8 from the original
Tritanopia#00B3B6no blue cones; rare, and affects men and women equally; ΔE 28.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.65:1WCAG large text: Fail
Contrast with black, large text7.94:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 14.3Sky blue · ΔE 15.8Steel blue · ΔE 15.9Deep skyblue · ΔE 16.2Light steelblue · ΔE 21.9Light slate grey · ΔE 22.6
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 14.33, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D28157
Analogous#57D2BF, #576AD2
Triadic#D257A8, #A8D257
Split complementary#D2576A, #D2BF57
Tetradic#BF57D2, #D28157, #6AD257

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F8FBFD
Lighter +30%#D0E6F2
Lighter +20%#A7D2E8
Lighter +10%#7FBDDD
Darker −10%#3492C2
Darker −20%#29739A
Darker −30%#1E5572
Darker −40%#143749
More saturated +25%#3CB0ED
Less saturated −25%#72A0B7

Channel breakdown

R87
G168
B210
Red87 (34.1%)
Green168 (65.9%)
Blue210 (82.4%)
Hue200.49°
Saturation (HSL)57.75%
Lightness58.24%
Dominant channelBlue
Hex per channelR 57 · G A8 · B D2

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Every value on this page was computed from “57a8d2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.