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Recognised as Colour

#21CF2A

  • #21CF2A
  • Green
  • Dark
  • Nearest: Limegreen

#21CF2A is a green with RGB values 33, 207, 42 and HSL 123°, 73%, 47%. It is a dark colour, so black text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#21CF2A#21CF2A
HEX#21CF2A
RGBrgb(33, 207, 42)
RGB (0–1)0.1294, 0.8118, 0.1647
RGB percentages12.9%, 81.2%, 16.5%
HSLhsl(123.1, 72.5%, 47.1%)
HSV / HSBhsv(123.1, 84.1%, 81.2%)
CMYK84.1%, 0%, 79.7%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,215,722
CSS custom property--colour: #21CF2A;

Brightness & contrast

Relative luminance0.45116WCAG 2.x, 0 is black and 1 is white
Perceived brightness160.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.02:1
Contrast with white2.1:1WCAG normal text: Fail
Contrast with black10.02:1WCAG normal text: AAA
Greyscale equivalent#9E9E9E
Inverted#DE30D5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D3BB00no red cones; affects about 1% of men; ΔE 65.1 from the original
Deuteranopia#C2AE3Fno green cones; the most common form, about 1% of men; ΔE 65.2 from the original
Tritanopia#00C9B1no blue cones; rare, and affects men and women equally; ΔE 68 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.1:1WCAG large text: Fail
Contrast with black, large text10.02:1WCAG large text: AAA

Named colours

Limegreen · ΔE 4.2Spring green · ΔE 24Lawn green · ΔE 26.3Chartreuse · ΔE 27.5Lime · ΔE 28.8Green yellow · ΔE 31.5
Nearest named CSS colourLimegreen (#32CD32)ΔE 4.2, a close match
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF21C6
Analogous#6FCF21, #21CF81
Triadic#2A21CF, #CF2A21
Split complementary#8121CF, #CF216F
Tetradic#216FCF, #CF21C6, #CF8121

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C6F6C9
Lighter +30%#9AEF9E
Lighter +20%#6EE874
Lighter +10%#42E14A
Darker −10%#1AA321
Darker −20%#137718
Darker −30%#0C4B0F
Darker −40%#051F06
More saturated +25%#03ED0F
Less saturated −25%#3FB145

Channel breakdown

R33
G207
B42
Red33 (12.9%)
Green207 (81.2%)
Blue42 (16.5%)
Hue123.1°
Saturation (HSL)72.5%
Lightness47.06%
Dominant channelGreen
Hex per channelR 21 · G CF · B 2A

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Every value on this page was computed from “21cf2a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.