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Recognised as Colour

#57ACF4

  • #57ACF4
  • Blue
  • Dark
  • Nearest: Deep skyblue

#57ACF4 is a blue with RGB values 87, 172, 244 and HSL 208°, 88%, 65%. It is a dark colour, so black text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#57ACF4#57ACF4
HEX#57ACF4
RGBrgb(87, 172, 244)
RGB (0–1)0.3412, 0.6745, 0.9569
RGB percentages34.1%, 67.5%, 95.7%
HSLhsl(207.5, 87.7%, 64.9%)
HSV / HSBhsv(207.5, 64.3%, 95.7%)
CMYK64.3%, 29.5%, 0%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,745,908
CSS custom property--colour: #57ACF4;

Brightness & contrast

Relative luminance0.38063WCAG 2.x, 0 is black and 1 is white
Perceived brightness162.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.61:1
Contrast with white2.44:1WCAG normal text: Fail
Contrast with black8.61:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#A8530B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8CAEF7no red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#779FF3no green cones; the most common form, about 1% of men; ΔE 13.8 from the original
Tritanopia#00BDC5no blue cones; rare, and affects men and women equally; ΔE 42.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.44:1WCAG large text: Fail
Contrast with black, large text8.61:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 14.5Cornflower blue · ΔE 15.7Steel blue · ΔE 19.3Light skyblue · ΔE 20.2Dodgerblue · ΔE 25.8Sky blue · ΔE 27.1
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 14.46, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F49F57
Analogous#57F4EE, #575DF4
Triadic#F457AC, #ACF457
Split complementary#F4575E, #F4EE57
Tetradic#EE57F4, #F49F57, #5DF457

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E7F3FD
Lighter +20%#B7DBFA
Lighter +10%#87C4F7
Darker −10%#2794F1
Darker −20%#0E7BD7
Darker −30%#0B5FA7
Darker −40%#084477
More saturated +25%#4CADFF
Less saturated −25%#6DAADE

Channel breakdown

R87
G172
B244
Red87 (34.1%)
Green172 (67.5%)
Blue244 (95.7%)
Hue207.52°
Saturation (HSL)87.71%
Lightness64.9%
Dominant channelBlue
Hex per channelR 57 · G AC · B F4

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Every value on this page was computed from “57acf4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.