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Recognised as Colour

#21DCA6

  • #21DCA6
  • Cyan
  • Light
  • Nearest: Aquamarine

#21DCA6 is a cyan with RGB values 33, 220, 166 and HSL 163°, 74%, 50%. It is a light colour, so black text on it reaches 11.9:1 contrast (AAA for normal text). The nearest named colour is Aquamarine.

Colour values

#21DCA6#21DCA6
HEX#21DCA6
RGBrgb(33, 220, 166)
RGB (0–1)0.1294, 0.8627, 0.651
RGB percentages12.9%, 86.3%, 65.1%
HSLhsl(162.7, 73.9%, 49.6%)
HSV / HSBhsv(162.7, 85%, 86.3%)
CMYK85%, 0%, 24.5%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,219,174
CSS custom property--colour: #21DCA6;

Brightness & contrast

Relative luminance0.54263WCAG 2.x, 0 is black and 1 is white
Perceived brightness178.5 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.85:1
Contrast with white1.77:1WCAG normal text: Fail
Contrast with black11.85:1WCAG normal text: AAA
Greyscale equivalent#B0B0B0
Inverted#DE2359

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D7CCA3no red cones; affects about 1% of men; ΔE 54 from the original
Deuteranopia#C1BCAAno green cones; the most common form, about 1% of men; ΔE 54.9 from the original
Tritanopia#00DDCDno blue cones; rare, and affects men and women equally; ΔE 20.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.77:1WCAG large text: Fail
Contrast with black, large text11.85:1WCAG large text: AAA

Named colours

Aquamarine · ΔE 17.7Medium seagreen · ΔE 18.4Medium aquamarine · ΔE 18.9Turquoise · ΔE 22.1Medium spring green · ΔE 24.9Light green · ΔE 25.8
Nearest named CSS colourAquamarine (#7FFFD4)ΔE 17.67, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DC2157
Analogous#21DC48, #21B5DC
Triadic#A621DC, #DCA621
Split complementary#DC21B5, #DC4821
Tetradic#4821DC, #DC2157, #B5DC21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D1F8ED
Lighter +30%#A5F1DB
Lighter +20%#78EBCA
Lighter +10%#4CE4B8
Darker −10%#1AB085
Darker −20%#148363
Darker −30%#0D5742
Darker −40%#062B20
More saturated +25%#01FCB3
Less saturated −25%#41BC99

Channel breakdown

R33
G220
B166
Red33 (12.9%)
Green220 (86.3%)
Blue166 (65.1%)
Hue162.67°
Saturation (HSL)73.91%
Lightness49.61%
Dominant channelGreen
Hex per channelR 21 · G DC · B A6

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Every value on this page was computed from “21dca6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.