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Recognised as Colour

#21AF70

  • #21AF70
  • Cyan
  • Dark
  • Nearest: Medium seagreen

#21AF70 is a cyan with RGB values 33, 175, 112 and HSL 153°, 68%, 41%. It is a dark colour, so black text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#21AF70#21AF70
HEX#21AF70
RGBrgb(33, 175, 112)
RGB (0–1)0.1294, 0.6863, 0.4392
RGB percentages12.9%, 68.6%, 43.9%
HSLhsl(153.4, 68.3%, 40.8%)
HSV / HSBhsv(153.4, 81.1%, 68.6%)
CMYK81.1%, 0%, 36%, 31.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,207,600
CSS custom property--colour: #21AF70;

Brightness & contrast

Relative luminance0.32153WCAG 2.x, 0 is black and 1 is white
Perceived brightness140.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.43:1
Contrast with white2.83:1WCAG normal text: Fail
Contrast with black7.43:1WCAG normal text: AAA
Greyscale equivalent#8C8C8C
Inverted#DE508F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#ADA16Cno red cones; affects about 1% of men; ΔE 47.8 from the original
Deuteranopia#9D9574no green cones; the most common form, about 1% of men; ΔE 48.5 from the original
Tritanopia#00AE9Fno blue cones; rare, and affects men and women equally; ΔE 27.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.83:1WCAG large text: Fail
Contrast with black, large text7.43:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 3.7Sea green · ΔE 16.4Medium aquamarine · ΔE 22.4Forest green · ΔE 26.1Light green · ΔE 27.7Dark seagreen · ΔE 28.6
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 3.71, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AF2160
Analogous#21AF29, #21A7AF
Triadic#7021AF, #AF7021
Split complementary#AF21A7, #AF2921
Tetradic#2921AF, #AF2160, #A7AF21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ADEFD2
Lighter +30%#82E7BA
Lighter +20%#57DFA3
Lighter +10%#2CD78B
Darker −10%#198455
Darker −20%#115939
Darker −30%#092E1E
Darker −40%#010302
More saturated +25%#07C973
Less saturated −25%#3B956D

Channel breakdown

R33
G175
B112
Red33 (12.9%)
Green175 (68.6%)
Blue112 (43.9%)
Hue153.38°
Saturation (HSL)68.27%
Lightness40.78%
Dominant channelGreen
Hex per channelR 21 · G AF · B 70

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Every value on this page was computed from “21af70” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.