#3F4579

#3F4579

Color Values

HEX

#3F4579

RGB

63, 69, 121

HSL

233.8, 31.5%, 36.1%

HSV

233.8, 47.9%, 47.5%

CMYK

47.9%, 43.0%, 0.0%, 52.5%

OKLCH

0.4108 0.0869 276.9

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#3F4579

#79733F

Analogous

#3F6279

#563F79

#3F4579

Triadic

#3F4579

#793F45

#45793F

Split Complementary

#3F4579

#79563F

#62793F

Tetradic

#3F4579

#793F62

#79733F

#3F7956

Color Blindness Simulation

Original

#3F4579

Protanopia

#42426C

Deuteranopia

#414169

Tritanopia

#3F6260

Achromatopsia

#474747

CSS Usage

background-color: #3F4579;
color: #3F4579;
border-color: #3F4579;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F5F6F9
100
#E8E9F2
200
#D0D2E7
300
#AFB3D5
400
#8389BE
500
#5760A8
600
#464D86
700
#383D6B
800
#2C3054
900
#23263E
950
#161827

Contrast Checker

Text on white

8.98:1

AA Pass AAA Pass

Text on black

2.34:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026