#21823B

#21823B

Color Values

HEX

#21823B

RGB

33, 130, 59

HSL

136.1, 59.5%, 32.0%

HSV

136.1, 74.6%, 51.0%

CMYK

74.6%, 0.0%, 54.6%, 49.0%

OKLCH

0.535 0.1383 148.1

Properties

Cool Dark Nearest: NCS S 2060-G Deep Green

Color Harmonies

Complementary

#21823B

#822168

Analogous

#388221

#21826C

#21823B

Triadic

#21823B

#3B2182

#823B21

Split Complementary

#21823B

#6C2182

#822138

Tetradic

#21823B

#213882

#822168

#826C21

Color Blindness Simulation

Original

#21823B

Protanopia

#4B4C4C

Deuteranopia

#453E50

Tritanopia

#265A5D

Achromatopsia

#686868

CSS Usage

background-color: #21823B;
color: #21823B;
border-color: #21823B;
Nearest Tailwind: Green 700 #15803D

Tailwind Shades

50
#F3FBF6
100
#E4F6E9
200
#C6F1D1
300
#9DE6B1
400
#69D987
500
#34CB5C
600
#29A34A
700
#21823B
800
#1A662E
900
#174A24
950
#0E2F17

Contrast Checker

Text on white

4.86:1

AA Pass AAA Fail

Text on black

4.32:1

AA Fail AAA Fail

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