#3F4957

#3F4957

Color Values

HEX

#3F4957

RGB

63, 73, 87

HSL

215.0, 16.0%, 29.4%

HSV

215.0, 27.6%, 34.1%

CMYK

27.6%, 16.1%, 0.0%, 65.9%

OKLCH

0.402 0.027 256.8

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#3F4957

#574D3F

Analogous

#3F5557

#413F57

#3F4957

Triadic

#3F4957

#573F49

#49573F

Split Complementary

#3F4957

#57413F

#55573F

Tetradic

#3F4957

#573F55

#574D3F

#3F5741

Color Blindness Simulation

Original

#3F4957

Protanopia

#434354

Deuteranopia

#434253

Tritanopia

#3F5150

Achromatopsia

#484848

CSS Usage

background-color: #3F4957;
color: #3F4957;
border-color: #3F4957;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F6F7F8
100
#EBEDF0
200
#D6DAE1
300
#B8C0CC
400
#929EB0
500
#6B7C94
600
#566376
700
#454F5F
800
#363E4A
900
#292F37
950
#1A1E23

Contrast Checker

Text on white

9.12:1

AA Pass AAA Pass

Text on black

2.3:1

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