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Recognised as Colour

#21C901

  • #21C901
  • Green
  • Dark
  • Nearest: Limegreen

#21C901 is a green with RGB values 33, 201, 1 and HSL 110°, 99%, 40%. It is a dark colour, so black text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Limegreen.

Colour values

#21C901#21C901
HEX#21C901
RGBrgb(33, 201, 1)
RGB (0–1)0.1294, 0.7882, 0.0039
RGB percentages12.9%, 78.8%, 0.4%
HSLhsl(110.4, 99%, 39.6%)
HSV / HSBhsv(110.4, 99.5%, 78.8%)
CMYK83.6%, 0%, 99.5%, 21.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,214,145
CSS custom property--colour: #21C901;

Brightness & contrast

Relative luminance0.42099WCAG 2.x, 0 is black and 1 is white
Perceived brightness155.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.42:1
Contrast with white2.23:1WCAG normal text: Fail
Contrast with black9.42:1WCAG normal text: AAA
Greyscale equivalent#979797
Inverted#DE36FE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CEB500no red cones; affects about 1% of men; ΔE 64.6 from the original
Deuteranopia#BDA92Cno green cones; the most common form, about 1% of men; ΔE 64.5 from the original
Tritanopia#00C2AAno blue cones; rare, and affects men and women equally; ΔE 73.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.23:1WCAG large text: Fail
Contrast with black, large text9.42:1WCAG large text: AAA

Named colours

Limegreen · ΔE 8.9Lawn green · ΔE 23.6Chartreuse · ΔE 24.9Lime · ΔE 26.9Spring green · ΔE 29.5Green yellow · ΔE 29.9
Nearest named CSS colourLimegreen (#32CD32)ΔE 8.9, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A901C9
Analogous#85C901, #01C945
Triadic#0121C9, #C90121
Split complementary#4501C9, #C90185
Tetradic#0185C9, #A901C9, #C94501

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8FE98
Lighter +30%#7DFE65
Lighter +20%#53FE32
Lighter +10%#29FC01
Darker −10%#199601
Darker −20%#106400
Darker −30%#083100
Darker −40%#000000
More saturated +25%#20CA00
Less saturated −25%#32B01A

Channel breakdown

R33
G201
B1
Red33 (12.9%)
Green201 (78.8%)
Blue1 (0.4%)
Hue110.4°
Saturation (HSL)99.01%
Lightness39.61%
Dominant channelGreen
Hex per channelR 21 · G C9 · B 01

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Every value on this page was computed from “21c901” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.