#21636B

#21636B

Color Values

HEX

#21636B

RGB

33, 99, 107

HSL

186.5, 52.9%, 27.5%

HSV

186.5, 69.2%, 42.0%

CMYK

69.2%, 7.5%, 0.0%, 58.0%

OKLCH

0.4621 0.0661 206.5

Properties

Cool Dark Nearest: RAL 5021 Water Blue

Color Harmonies

Complementary

#21636B

#6B2921

Analogous

#216B4E

#213E6B

#21636B

Triadic

#21636B

#6B2163

#636B21

Split Complementary

#21636B

#6B213E

#6B4E21

Tetradic

#21636B

#4E216B

#6B2921

#3E6B21

Color Blindness Simulation

Original

#21636B

Protanopia

#3E3E69

Deuteranopia

#3A3569

Tritanopia

#246867

Achromatopsia

#565656

CSS Usage

background-color: #21636B;
color: #21636B;
border-color: #21636B;
Nearest Tailwind: Teal 800 #115E59

Tailwind Shades

50
#F4FAFB
100
#E5F3F5
200
#C8EAEE
300
#A1DBE2
400
#6FC8D3
500
#3CB4C3
600
#30909C
700
#26737D
800
#1E5A61
900
#194348
950
#102A2D

Contrast Checker

Text on white

6.86:1

AA Pass AAA Fail

Text on black

3.06:1

AA Fail AAA Fail

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