Nerdulator> put something in

Recognised as Colour

#21CB40

  • #21CB40
  • Green
  • Dark
  • Nearest: Limegreen

#21CB40 is a green with RGB values 33, 203, 64 and HSL 131°, 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

#21CB40#21CB40
HEX#21CB40
RGBrgb(33, 203, 64)
RGB (0–1)0.1294, 0.7961, 0.251
RGB percentages12.9%, 79.6%, 25.1%
HSLhsl(130.9, 72%, 46.3%)
HSV / HSBhsv(130.9, 83.7%, 79.6%)
CMYK83.7%, 0%, 68.5%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,214,720
CSS custom property--colour: #21CB40;

Brightness & contrast

Relative luminance0.43405WCAG 2.x, 0 is black and 1 is white
Perceived brightness158.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.68:1
Contrast with white2.17:1WCAG normal text: Fail
Contrast with black9.68:1WCAG normal text: AAA
Greyscale equivalent#9D9D9D
Inverted#DE34BF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CEB72Cno red cones; affects about 1% of men; ΔE 62.8 from the original
Deuteranopia#BDAB4Dno green cones; the most common form, about 1% of men; ΔE 62.5 from the original
Tritanopia#00C6AFno blue cones; rare, and affects men and women equally; ΔE 59.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.17:1WCAG large text: Fail
Contrast with black, large text9.68:1WCAG large text: AAA

Named colours

Limegreen · ΔE 6Spring green · ΔE 20.9Medium spring green · ΔE 28Forest green · ΔE 29.6Green · ΔE 30.6Light green · ΔE 31.7
Nearest named CSS colourLimegreen (#32CD32)ΔE 6.01, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB21AC
Analogous#57CB21, #21CB95
Triadic#4021CB, #CB4021
Split complementary#9521CB, #CB2157
Tetradic#2157CB, #CB21AC, #CB9521

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3F5CC
Lighter +30%#97EEA7
Lighter +20%#6BE782
Lighter +10%#3FE05C
Darker −10%#1A9F32
Darker −20%#137324
Darker −30%#0C4717
Darker −40%#041C09
More saturated +25%#04E82D
Less saturated −25%#3EAE53

Channel breakdown

R33
G203
B64
Red33 (12.9%)
Green203 (79.6%)
Blue64 (25.1%)
Hue130.94°
Saturation (HSL)72.03%
Lightness46.27%
Dominant channelGreen
Hex per channelR 21 · G CB · B 40

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “21cb40” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.