#3979CC

#3979CC

Color Values

HEX

#3979CC

RGB

57, 121, 204

HSL

213.9, 59.0%, 51.2%

HSV

213.9, 72.1%, 80.0%

CMYK

72.1%, 40.7%, 0.0%, 20.0%

OKLCH

0.5758 0.144 256.1

Properties

Cool Light Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#3979CC

#CC8C39

Analogous

#39C2CC

#4339CC

#3979CC

Triadic

#3979CC

#CC3979

#79CC39

Split Complementary

#3979CC

#CC4339

#C2CC39

Tetradic

#3979CC

#CC39C2

#CC8C39

#39CC43

Color Blindness Simulation

Original

#3979CC

Protanopia

#5555B8

Deuteranopia

#514CB3

Tritanopia

#3CA8A5

Achromatopsia

#717171

CSS Usage

background-color: #3979CC;
color: #3979CC;
border-color: #3979CC;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F7FB
100
#E4ECF6
200
#C6D9F0
300
#9EBDE6
400
#6999D8
500
#3476CB
600
#2A5EA2
700
#214B82
800
#1A3B65
900
#172D4A
950
#0E1C2F

Contrast Checker

Text on white

4.39:1

AA Fail AAA Fail

Text on black

4.78:1

AA Pass AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

ก.พ. 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

ก.พ. 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

ก.พ. 19, 2026