#42B581

#42B581

Color Values

HEX

#42B581

RGB

66, 181, 129

HSL

152.9, 46.6%, 48.4%

HSV

152.9, 63.5%, 71.0%

CMYK

63.5%, 0.0%, 28.7%, 29.0%

OKLCH

0.6944 0.1296 160.3

Properties

Cool Light Nearest: Green

Color Harmonies

Complementary

#42B581

#B54276

Analogous

#42B547

#42AFB5

#42B581

Triadic

#42B581

#8142B5

#B58142

Split Complementary

#42B581

#B542AF

#B54742

Tetradic

#42B581

#4742B5

#B54276

#AFB542

Color Blindness Simulation

Original

#42B581

Protanopia

#74758E

Deuteranopia

#6D6491

Tritanopia

#48989A

Achromatopsia

#999999

CSS Usage

background-color: #42B581;
color: #42B581;
border-color: #42B581;
Nearest Tailwind: Emerald 500 #10B981

Tailwind Shades

50
#F4FAF8
100
#E6F4EE
200
#CBECDD
300
#A5DEC5
400
#75CDA5
500
#44BB85
600
#36966B
700
#2C7855
800
#225D43
900
#1C4532
950
#122B20

Contrast Checker

Text on white

2.57:1

AA Fail AAA Fail

Text on black

8.16:1

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