#21535A

#21535A

Color Values

HEX

#21535A

RGB

33, 83, 90

HSL

187.4, 46.3%, 24.1%

HSV

187.4, 63.3%, 35.3%

CMYK

63.3%, 7.8%, 0.0%, 64.7%

OKLCH

0.4114 0.0543 207.7

Properties

Cool Dark Nearest: darkslategrey

Color Harmonies

Complementary

#21535A

#5A2821

Analogous

#215A44

#21365A

#21535A

Triadic

#21535A

#5A2153

#535A21

Split Complementary

#21535A

#5A2136

#5A4421

Tetradic

#21535A

#44215A

#5A2821

#365A21

Color Blindness Simulation

Original

#21535A

Protanopia

#373758

Deuteranopia

#343058

Tritanopia

#245757

Achromatopsia

#494949

CSS Usage

background-color: #21535A;
color: #21535A;
border-color: #21535A;
Nearest Tailwind: Teal 900 #134E4A

Tailwind Shades

50
#F4FAFA
100
#E6F2F4
200
#CBE8EC
300
#A5D7DE
400
#75C2CC
500
#44ACBB
600
#378A95
700
#2C6E77
800
#22565D
900
#1C4045
950
#12282B

Contrast Checker

Text on white

8.57:1

AA Pass AAA Pass

Text on black

2.45:1

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