#21F40B

#21F40B

Color Values

HEX

#21F40B

RGB

33, 244, 11

HSL

114.3, 91.4%, 50.0%

HSV

114.3, 95.5%, 95.7%

CMYK

86.5%, 0.0%, 95.5%, 4.3%

OKLCH

0.84 0.2813 142.1

Properties

Cool Light Nearest: Electric Lime

Color Harmonies

Complementary

#21F40B

#DE0BF4

Analogous

#96F40B

#0BF469

#21F40B

Triadic

#21F40B

#0B21F4

#F40B21

Split Complementary

#21F40B

#690BF4

#F40B96

Tetradic

#21F40B

#0B96F4

#DE0BF4

#F4690B

Color Blindness Simulation

Original

#21F40B

Protanopia

#7C7E43

Deuteranopia

#706051

Tritanopia

#2C707A

Achromatopsia

#B6B6B6

CSS Usage

background-color: #21F40B;
color: #21F40B;
border-color: #21F40B;
Nearest Tailwind: Lime 400 #A3E635

Tailwind Shades

50
#F3FDF1
100
#E2FBDF
200
#C1FCBB
300
#94FA8A
400
#5BF74A
500
#21F40B
600
#1AC309
700
#159C07
800
#117A05
900
#105809
950
#0A3805

Contrast Checker

Text on white

1.5:1

AA Fail AAA Fail

Text on black

14.01:1

AA Pass AAA Pass

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026