#3F617F

#3F617F

Color Values

HEX

#3F617F

RGB

63, 97, 127

HSL

208.1, 33.7%, 37.3%

HSV

208.1, 50.4%, 49.8%

CMYK

50.4%, 23.6%, 0.0%, 50.2%

OKLCH

0.4795 0.0627 246.2

Properties

Cool Dark Nearest: steelblue 4

Color Harmonies

Complementary

#3F617F

#7F5D3F

Analogous

#3F7F7D

#3F417F

#3F617F

Triadic

#3F617F

#7F3F61

#617F3F

Split Complementary

#3F617F

#7F3F41

#7F7D3F

Tetradic

#3F617F

#7D3F7F

#7F5D3F

#417F3F

Color Blindness Simulation

Original

#3F617F

Protanopia

#4E4E78

Deuteranopia

#4C4976

Tritanopia

#417271

Achromatopsia

#5C5C5C

CSS Usage

background-color: #3F617F;
color: #3F617F;
border-color: #3F617F;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F5F7FA
100
#E8EDF2
200
#CFDCE7
300
#ADC3D6
400
#81A3C0
500
#5582AA
600
#446888
700
#36536D
800
#2A4155
900
#22313F
950
#151F28

Contrast Checker

Text on white

6.51:1

AA Pass AAA Fail

Text on black

3.23:1

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