#21F588

#21F588

Color Values

HEX

#21F588

RGB

33, 245, 136

HSL

149.2, 91.4%, 54.5%

HSV

149.2, 86.5%, 96.1%

CMYK

86.5%, 0.0%, 44.5%, 3.9%

OKLCH

0.8529 0.2135 153.1

Properties

Cool Light Nearest: springgreen 2

Color Harmonies

Complementary

#21F588

#F5218E

Analogous

#24F521

#21F5F2

#21F588

Triadic

#21F588

#8821F5

#F58821

Split Complementary

#21F588

#F221F5

#F52124

Tetradic

#21F588

#2124F5

#F5218E

#F5F221

Color Blindness Simulation

Original

#21F588

Protanopia

#7D7FA2

Deuteranopia

#7061A9

Tritanopia

#2CB7BC

Achromatopsia

#C0C0C0

CSS Usage

background-color: #21F588;
color: #21F588;
border-color: #21F588;
Nearest Tailwind: Green 400 #4ADE80

Tailwind Shades

50
#F1FDF7
100
#DFFBED
200
#BBFCDA
300
#8AFAC0
400
#4AF79E
500
#0BF47C
600
#09C364
700
#079C50
800
#057A3E
900
#09582F
950
#05381E

Contrast Checker

Text on white

1.45:1

AA Fail AAA Fail

Text on black

14.48:1

AA Pass AAA Pass

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026