#403F52

#403F52

Color Values

HEX

#403F52

RGB

64, 63, 82

HSL

243.2, 13.1%, 28.4%

HSV

243.2, 23.2%, 32.2%

CMYK

22.0%, 23.2%, 0.0%, 67.8%

OKLCH

0.3765 0.0323 287.2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#403F52

#51523F

Analogous

#3F4752

#493F52

#403F52

Triadic

#403F52

#52403F

#3F5240

Split Complementary

#403F52

#52493F

#47523F

Tetradic

#403F52

#523F47

#51523F

#3F5249

Color Blindness Simulation

Original

#403F52

Protanopia

#40404D

Deuteranopia

#40404C

Tritanopia

#404A49

Achromatopsia

#414141

CSS Usage

background-color: #403F52;
color: #403F52;
border-color: #403F52;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F7F6F8
100
#EBEBEF
200
#D7D7E0
300
#BBBACA
400
#9694AD
500
#716F90
600
#5A5973
700
#48475C
800
#383748
900
#2B2B36
950
#1B1B22

Contrast Checker

Text on white

10.24:1

AA Pass AAA Pass

Text on black

2.05:1

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