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Recognised as Colour

#21CF42

  • #21CF42
  • Green
  • Dark
  • Nearest: Limegreen

#21CF42 is a green with RGB values 33, 207, 66 and HSL 131°, 73%, 47%. It is a dark colour, so black text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#21CF42#21CF42
HEX#21CF42
RGBrgb(33, 207, 66)
RGB (0–1)0.1294, 0.8118, 0.2588
RGB percentages12.9%, 81.2%, 25.9%
HSLhsl(131.4, 72.5%, 47.1%)
HSV / HSBhsv(131.4, 84.1%, 81.2%)
CMYK84.1%, 0%, 68.1%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,215,746
CSS custom property--colour: #21CF42;

Brightness & contrast

Relative luminance0.45342WCAG 2.x, 0 is black and 1 is white
Perceived brightness161.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.07:1
Contrast with white2.09:1WCAG normal text: Fail
Contrast with black10.07:1WCAG normal text: AAA
Greyscale equivalent#A0A0A0
Inverted#DE30BD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D2BB2Eno red cones; affects about 1% of men; ΔE 63.6 from the original
Deuteranopia#C0AF50no green cones; the most common form, about 1% of men; ΔE 63 from the original
Tritanopia#00CAB3no blue cones; rare, and affects men and women equally; ΔE 60.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.09:1WCAG large text: Fail
Contrast with black, large text10.07:1WCAG large text: AAA

Named colours

Limegreen · ΔE 5.5Spring green · ΔE 19.7Medium spring green · ΔE 27.7Forest green · ΔE 31.4Pale green · ΔE 32Light green · ΔE 32.2
Nearest named CSS colourLimegreen (#32CD32)ΔE 5.55, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF21AE
Analogous#57CF21, #21CF99
Triadic#4221CF, #CF4221
Split complementary#9921CF, #CF2157
Tetradic#2157CF, #CF21AE, #CF9921

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C6F6CF
Lighter +30%#9AEFAA
Lighter +20%#6EE885
Lighter +10%#42E160
Darker −10%#1AA334
Darker −20%#137726
Darker −30%#0C4B18
Darker −40%#051F0A
More saturated +25%#03ED2F
Less saturated −25%#3FB155

Channel breakdown

R33
G207
B66
Red33 (12.9%)
Green207 (81.2%)
Blue66 (25.9%)
Hue131.38°
Saturation (HSL)72.5%
Lightness47.06%
Dominant channelGreen
Hex per channelR 21 · G CF · B 42

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Every value on this page was computed from “21cf42” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.