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Recognised as Colour

#21CF4D

  • #21CF4D
  • Green
  • Dark
  • Nearest: Limegreen

#21CF4D is a green with RGB values 33, 207, 77 and HSL 135°, 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

#21CF4D#21CF4D
HEX#21CF4D
RGBrgb(33, 207, 77)
RGB (0–1)0.1294, 0.8118, 0.302
RGB percentages12.9%, 81.2%, 30.2%
HSLhsl(135.2, 72.5%, 47.1%)
HSV / HSBhsv(135.2, 84.1%, 81.2%)
CMYK84.1%, 0%, 62.8%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,215,757
CSS custom property--colour: #21CF4D;

Brightness & contrast

Relative luminance0.45485WCAG 2.x, 0 is black and 1 is white
Perceived brightness161.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.1:1
Contrast with white2.08:1WCAG normal text: Fail
Contrast with black10.1:1WCAG normal text: AAA
Greyscale equivalent#A1A1A1
Inverted#DE30B2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D2BB3Eno red cones; affects about 1% of men; ΔE 62.9 from the original
Deuteranopia#C0AF58no green cones; the most common form, about 1% of men; ΔE 62.4 from the original
Tritanopia#00CAB4no blue cones; rare, and affects men and women equally; ΔE 56.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.08:1WCAG large text: Fail
Contrast with black, large text10.1:1WCAG large text: AAA

Named colours

Limegreen · ΔE 9.8Spring green · ΔE 18.6Medium spring green · ΔE 24.1Light green · ΔE 28.8Pale green · ΔE 29Forest green · ΔE 29.5
Nearest named CSS colourLimegreen (#32CD32)ΔE 9.83, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF21A3
Analogous#4CCF21, #21CFA4
Triadic#4D21CF, #CF4D21
Split complementary#A421CF, #CF214C
Tetradic#214CCF, #CF21A3, #CFA421

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C6F6D2
Lighter +30%#9AEFB0
Lighter +20%#6EE88D
Lighter +10%#42E16A
Darker −10%#1AA33D
Darker −20%#13772C
Darker −30%#0C4B1C
Darker −40%#051F0C
More saturated +25%#03ED3E
Less saturated −25%#3FB15C

Channel breakdown

R33
G207
B77
Red33 (12.9%)
Green207 (81.2%)
Blue77 (30.2%)
Hue135.17°
Saturation (HSL)72.5%
Lightness47.06%
Dominant channelGreen
Hex per channelR 21 · G CF · B 4D

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Every value on this page was computed from “21cf4d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.