#3F586F

#3F586F

Color Values

HEX

#3F586F

RGB

63, 88, 111

HSL

208.8, 27.6%, 34.1%

HSV

208.8, 43.2%, 43.5%

CMYK

43.2%, 20.7%, 0.0%, 56.5%

OKLCH

0.4499 0.0485 246.9

Properties

Cool Dark Nearest: RAL 5025 Pearl Gentian Blue

Color Harmonies

Complementary

#3F586F

#6F563F

Analogous

#3F6F6E

#3F406F

#3F586F

Triadic

#3F586F

#6F3F58

#586F3F

Split Complementary

#3F586F

#6F3F40

#6F6E3F

Tetradic

#3F586F

#6E3F6F

#6F563F

#406F3F

Color Blindness Simulation

Original

#3F586F

Protanopia

#4A4A69

Deuteranopia

#484668

Tritanopia

#406564

Achromatopsia

#545454

CSS Usage

background-color: #3F586F;
color: #3F586F;
border-color: #3F586F;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F7F9
100
#E9EDF1
200
#D1DCE5
300
#B1C2D3
400
#87A2BB
500
#5C81A3
600
#4A6782
700
#3B5368
800
#2E4051
900
#24313C
950
#171F26

Contrast Checker

Text on white

7.4:1

AA Pass AAA Pass

Text on black

2.84:1

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