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Recognised as Colour

#21E474

  • #21E474
  • Green
  • Light
  • Nearest: Medium spring green

#21E474 is a green with RGB values 33, 228, 116 and HSL 146°, 78%, 51%. It is a light colour, so black text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Medium spring green.

Colour values

#21E474#21E474
HEX#21E474
RGBrgb(33, 228, 116)
RGB (0–1)0.1294, 0.8941, 0.4549
RGB percentages12.9%, 89.4%, 45.5%
HSLhsl(145.5, 78.3%, 51.2%)
HSV / HSBhsv(145.5, 85.5%, 89.4%)
CMYK85.5%, 0%, 49.1%, 10.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,221,172
CSS custom property--colour: #21E474;

Brightness & contrast

Relative luminance0.57071WCAG 2.x, 0 is black and 1 is white
Perceived brightness179.9 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.41:1
Contrast with white1.69:1WCAG normal text: Fail
Contrast with black12.41:1WCAG normal text: AAA
Greyscale equivalent#B2B2B2
Inverted#DE1B8B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#E5D06Bno red cones; affects about 1% of men; ΔE 64.2 from the original
Deuteranopia#D0C17Cno green cones; the most common form, about 1% of men; ΔE 64.4 from the original
Tritanopia#00E0CAno blue cones; rare, and affects men and women equally; ΔE 47.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.69:1WCAG large text: Fail
Contrast with black, large text12.41:1WCAG large text: AAA

Named colours

Medium spring green · ΔE 12.1Spring green · ΔE 12.7Limegreen · ΔE 20.9Pale green · ΔE 23.2Light green · ΔE 23.7Medium seagreen · ΔE 30.9
Nearest named CSS colourMedium spring green (#00FA9A)ΔE 12.09, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E42191
Analogous#30E421, #21E4D6
Triadic#7421E4, #E47421
Split complementary#D621E4, #E4212F
Tetradic#212FE4, #E42191, #E4D621

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7FAE6
Lighter +30%#A9F5C9
Lighter +20%#7CEFAD
Lighter +10%#4EEA90
Darker −10%#17BB5D
Darker −20%#118E46
Darker −30%#0C6030
Darker −40%#063319
More saturated +25%#06FF70
Less saturated −25%#40C579

Channel breakdown

R33
G228
B116
Red33 (12.9%)
Green228 (89.4%)
Blue116 (45.5%)
Hue145.54°
Saturation (HSL)78.31%
Lightness51.18%
Dominant channelGreen
Hex per channelR 21 · G E4 · B 74

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Every value on this page was computed from “21e474” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.