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Colour

#21AFE0

  • #21AFE0
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#21AFE0 is a cyan with RGB values 33, 175, 224 and HSL 195°, 75%, 50%. It is a dark colour, so black text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#21AFE0#21AFE0
HEX#21AFE0
RGBrgb(33, 175, 224)
RGB (0–1)0.1294, 0.6863, 0.8784
RGB percentages12.9%, 68.6%, 87.8%
HSLhsl(195.4, 75.5%, 50.4%)
HSV / HSBhsv(195.4, 85.3%, 87.8%)
CMYK85.3%, 21.9%, 0%, 12.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,207,712
CSS custom property--colour: #21AFE0;

Brightness & contrast

Relative luminance0.36365WCAG 2.x, 0 is black and 1 is white
Perceived brightness155 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.27:1
Contrast with white2.54:1WCAG normal text: Fail
Contrast with black8.27:1WCAG normal text: AAA
Greyscale equivalent#949494
Inverted#DE501F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#95ACE2no red cones; affects about 1% of men; ΔE 24.3 from the original
Deuteranopia#7D9BDFno green cones; the most common form, about 1% of men; ΔE 26.2 from the original
Tritanopia#00BDBFno blue cones; rare, and affects men and women equally; ΔE 29.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.54:1WCAG large text: Fail
Contrast with black, large text8.27:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 9.8Light skyblue · ΔE 16.3Sky blue · ΔE 18.6Steel blue · ΔE 20.6Cadetblue · ΔE 27.8Light steelblue · ΔE 28.6
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 9.83, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E05221
Analogous#21E0B2, #214FE0
Triadic#E021AF, #AFE021
Split complementary#E0214F, #E0B221
Tetradic#B221E0, #E05221, #4FE021

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D4F0F9
Lighter +30%#A7DFF3
Lighter +20%#7BCFEC
Lighter +10%#4EBFE6
Darker −10%#198DB5
Darker −20%#136A88
Darker −30%#0D475B
Darker −40%#06242F
More saturated +25%#02BEFF
Less saturated −25%#41A0C0

Channel breakdown

R33
G175
B224
Red33 (12.9%)
Green175 (68.6%)
Blue224 (87.8%)
Hue195.39°
Saturation (HSL)75.49%
Lightness50.39%
Dominant channelBlue
Hex per channelR 21 · G AF · B E0

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Every value on this page was computed from “21afe0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.