#3F4951

#3F4951

Color Values

HEX

#3F4951

RGB

63, 73, 81

HSL

206.7, 12.5%, 28.2%

HSV

206.7, 22.2%, 31.8%

CMYK

22.2%, 9.9%, 0.0%, 68.2%

OKLCH

0.3995 0.0187 242.2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#3F4951

#51473F

Analogous

#3F5150

#3F4051

#3F4951

Triadic

#3F4951

#513F49

#49513F

Split Complementary

#3F4951

#513F40

#51503F

Tetradic

#3F4951

#503F51

#51473F

#40513F

Color Blindness Simulation

Original

#3F4951

Protanopia

#43434F

Deuteranopia

#43424F

Tritanopia

#3F4E4D

Achromatopsia

#474747

CSS Usage

background-color: #3F4951;
color: #3F4951;
border-color: #3F4951;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#EBEDEF
200
#D7DCE0
300
#BAC3C9
400
#95A2AC
500
#70818F
600
#596773
700
#47535C
800
#384148
900
#2B3136
950
#1B1F22

Contrast Checker

Text on white

9.2:1

AA Pass AAA Pass

Text on black

2.28:1

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