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Recognised as Colour

#57BAFF

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

#57BAFF is a blue with RGB values 87, 186, 255 and HSL 205°, 100%, 67%. It is a dark colour, so black text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#57BAFF#57BAFF
HEX#57BAFF
RGBrgb(87, 186, 255)
RGB (0–1)0.3412, 0.7294, 1
RGB percentages34.1%, 72.9%, 100%
HSLhsl(204.6, 100%, 67.1%)
HSV / HSBhsv(204.6, 65.9%, 100%)
CMYK65.9%, 27.1%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,749,503
CSS custom property--colour: #57BAFF;

Brightness & contrast

Relative luminance0.44364WCAG 2.x, 0 is black and 1 is white
Perceived brightness173.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.87:1
Contrast with white2.13:1WCAG normal text: Fail
Contrast with black9.87:1WCAG normal text: AAA
Greyscale equivalent#AAAAAA
Inverted#A84500

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#9BBBFFno red cones; affects about 1% of men; ΔE 15.3 from the original
Deuteranopia#84AAFEno green cones; the most common form, about 1% of men; ΔE 17.8 from the original
Tritanopia#00CBD2no blue cones; rare, and affects men and women equally; ΔE 40.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.13:1WCAG large text: Fail
Contrast with black, large text9.87:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 9.6Light skyblue · ΔE 16.1Cornflower blue · ΔE 21.5Steel blue · ΔE 22.9Sky blue · ΔE 23.3Light steelblue · ΔE 28.8
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 9.56, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF9C57
Analogous#57FFF0, #5766FF
Triadic#FF57BA, #BAFF57
Split complementary#FF5766, #FFF057
Tetradic#F057FF, #FF9C57, #66FF57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#F0F9FF
Lighter +20%#BDE4FF
Lighter +10%#8ACFFF
Darker −10%#24A5FF
Darker −20%#008DF0
Darker −30%#006FBD
Darker −40%#00518A
More saturated +25%#57BAFF
Less saturated −25%#6CB6EA

Channel breakdown

R87
G186
B255
Red87 (34.1%)
Green186 (72.9%)
Blue255 (100%)
Hue204.64°
Saturation (HSL)100%
Lightness67.06%
Dominant channelBlue
Hex per channelR 57 · G BA · B FF

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