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Recognised as Colour

#21CB58

  • #21CB58
  • Green
  • Dark
  • Nearest: Limegreen

#21CB58 is a green with RGB values 33, 203, 88 and HSL 139°, 72%, 46%. It is a dark colour, so black text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#21CB58#21CB58
HEX#21CB58
RGBrgb(33, 203, 88)
RGB (0–1)0.1294, 0.7961, 0.3451
RGB percentages12.9%, 79.6%, 34.5%
HSLhsl(139.4, 72%, 46.3%)
HSV / HSBhsv(139.4, 83.7%, 79.6%)
CMYK83.7%, 0%, 56.7%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,214,744
CSS custom property--colour: #21CB58;

Brightness & contrast

Relative luminance0.4374WCAG 2.x, 0 is black and 1 is white
Perceived brightness159.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.75:1
Contrast with white2.15:1WCAG normal text: Fail
Contrast with black9.75:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#DE34A7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CDB84Dno red cones; affects about 1% of men; ΔE 60.4 from the original
Deuteranopia#BBAC61no green cones; the most common form, about 1% of men; ΔE 60 from the original
Tritanopia#00C7B2no blue cones; rare, and affects men and women equally; ΔE 50.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.15:1WCAG large text: Fail
Contrast with black, large text9.75:1WCAG large text: AAA

Named colours

Limegreen · ΔE 16.3Spring green · ΔE 20.6Medium spring green · ΔE 20.9Light green · ΔE 24.8Pale green · ΔE 25.8Forest green · ΔE 26.2
Nearest named CSS colourLimegreen (#32CD32)ΔE 16.28, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB2194
Analogous#3FCB21, #21CBAD
Triadic#5821CB, #CB5821
Split complementary#AD21CB, #CB213F
Tetradic#213FCB, #CB2194, #CBAD21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3F5D3
Lighter +30%#97EEB3
Lighter +20%#6BE793
Lighter +10%#3FE073
Darker −10%#1A9F45
Darker −20%#137332
Darker −30%#0C471F
Darker −40%#041C0C
More saturated +25%#04E84E
Less saturated −25%#3EAE62

Channel breakdown

R33
G203
B88
Red33 (12.9%)
Green203 (79.6%)
Blue88 (34.5%)
Hue139.41°
Saturation (HSL)72.03%
Lightness46.27%
Dominant channelGreen
Hex per channelR 21 · G CB · B 58

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Every value on this page was computed from “21cb58” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.