#21579B

#21579B

Color Values

HEX

#21579B

RGB

33, 87, 155

HSL

213.4, 64.9%, 36.9%

HSV

213.4, 78.7%, 60.8%

CMYK

78.7%, 43.9%, 0.0%, 39.2%

OKLCH

0.4583 0.1244 255.9

Properties

Cool Dark Nearest: dodgerblue 4

Color Harmonies

Complementary

#21579B

#9B6521

Analogous

#21949B

#28219B

#21579B

Triadic

#21579B

#9B2157

#579B21

Split Complementary

#21579B

#9B2821

#949B21

Tetradic

#21579B

#9B2194

#9B6521

#219B28

Color Blindness Simulation

Original

#21579B

Protanopia

#38398B

Deuteranopia

#353187

Tritanopia

#247E7B

Achromatopsia

#505050

CSS Usage

background-color: #21579B;
color: #21579B;
border-color: #21579B;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F3F7FC
100
#E3ECF7
200
#C4D9F2
300
#9ABDEA
400
#639ADE
500
#2D76D2
600
#245EA8
700
#1D4C87
800
#163B69
900
#142D4D
950
#0D1D30

Contrast Checker

Text on white

7.24:1

AA Pass AAA Pass

Text on black

2.9:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026