#3F659C

#3F659C

Color Values

HEX

#3F659C

RGB

63, 101, 156

HSL

215.5, 42.5%, 42.9%

HSV

215.5, 59.6%, 61.2%

CMYK

59.6%, 35.3%, 0.0%, 38.8%

OKLCH

0.5044 0.0984 257.6

Properties

Cool Dark Nearest: RAL 5007 Brilliant Blue

Color Harmonies

Complementary

#3F659C

#9C763F

Analogous

#3F939C

#473F9C

#3F659C

Triadic

#3F659C

#9C3F65

#659C3F

Split Complementary

#3F659C

#9C473F

#939C3F

Tetradic

#3F659C

#9C3F93

#9C763F

#3F9C47

Color Blindness Simulation

Original

#3F659C

Protanopia

#4F508F

Deuteranopia

#4D4A8C

Tritanopia

#418482

Achromatopsia

#616161

CSS Usage

background-color: #3F659C;
color: #3F659C;
border-color: #3F659C;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F5F7FA
100
#E7ECF4
200
#CCD9EA
300
#A8BDDC
400
#7999C9
500
#4976B6
600
#3B5E91
700
#2F4B74
800
#253B5B
900
#1E2D43
950
#131C2A

Contrast Checker

Text on white

5.91:1

AA Pass AAA Fail

Text on black

3.55:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026