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Recognised as Colour

#21D79B

  • #21D79B
  • Cyan
  • Light
  • Nearest: Medium seagreen

#21D79B is a cyan with RGB values 33, 215, 155 and HSL 160°, 73%, 49%. It is a light colour, so black text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#21D79B#21D79B
HEX#21D79B
RGBrgb(33, 215, 155)
RGB (0–1)0.1294, 0.8431, 0.6078
RGB percentages12.9%, 84.3%, 60.8%
HSLhsl(160.2, 73.4%, 48.6%)
HSV / HSBhsv(160.2, 84.7%, 84.3%)
CMYK84.7%, 0%, 27.9%, 15.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,217,883
CSS custom property--colour: #21D79B;

Brightness & contrast

Relative luminance0.51291WCAG 2.x, 0 is black and 1 is white
Perceived brightness173.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.26:1
Contrast with white1.87:1WCAG normal text: Fail
Contrast with black11.26:1WCAG normal text: AAA
Greyscale equivalent#ACACAC
Inverted#DE2864

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D3C798no red cones; affects about 1% of men; ΔE 54.2 from the original
Deuteranopia#BEB89Fno green cones; the most common form, about 1% of men; ΔE 54.7 from the original
Tritanopia#00D7C7no blue cones; rare, and affects men and women equally; ΔE 24.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.87:1WCAG large text: Fail
Contrast with black, large text11.26:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 15.8Aquamarine · ΔE 20.4Medium aquamarine · ΔE 20.6Medium spring green · ΔE 22.9Light green · ΔE 23.9Turquoise · ΔE 25.5
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 15.76, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D7215D
Analogous#21D740, #21B8D7
Triadic#9B21D7, #D79B21
Split complementary#D721B8, #D74021
Tetradic#4021D7, #D7215D, #B8D721

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDF7E9
Lighter +30%#A1F0D6
Lighter +20%#74EAC3
Lighter +10%#48E3B0
Darker −10%#1AAB7B
Darker −20%#137F5B
Darker −30%#0D523B
Darker −40%#06261B
More saturated +25%#02F6A6
Less saturated −25%#40B890

Channel breakdown

R33
G215
B155
Red33 (12.9%)
Green215 (84.3%)
Blue155 (60.8%)
Hue160.22°
Saturation (HSL)73.39%
Lightness48.63%
Dominant channelGreen
Hex per channelR 21 · G D7 · B 9B

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Every value on this page was computed from “21d79b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.