#213957

#213957

Color Values

HEX

#213957

RGB

33, 57, 87

HSL

213.3, 45.0%, 23.5%

HSV

213.3, 62.1%, 34.1%

CMYK

62.1%, 34.5%, 0.0%, 65.9%

OKLCH

0.3402 0.0611 254.7

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#213957

#573F21

Analogous

#215457

#242157

#213957

Triadic

#213957

#572139

#395721

Split Complementary

#213957

#572421

#545721

Tetradic

#213957

#572154

#573F21

#215724

Color Blindness Simulation

Original

#213957

Protanopia

#2B2C50

Deuteranopia

#2A284E

Tritanopia

#224A49

Achromatopsia

#363636

CSS Usage

background-color: #213957;
color: #213957;
border-color: #213957;
Nearest Tailwind: Sky 950 #082F49

Tailwind Shades

50
#F4F7FA
100
#E6ECF4
200
#CBDAEB
300
#A6BFDD
400
#769CCB
500
#4679B9
600
#386194
700
#2D4E76
800
#233D5C
900
#1D2E44
950
#121D2B

Contrast Checker

Text on white

11.75:1

AA Pass AAA Pass

Text on black

1.79:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

1月 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

1月 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

1月 15, 2026