#403D47

#403D47

Color Values

HEX

#403D47

RGB

64, 61, 71

HSL

258.0, 7.6%, 25.9%

HSV

258.0, 14.1%, 27.8%

CMYK

9.9%, 14.1%, 0.0%, 72.2%

OKLCH

0.3668 0.0174 299.2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#403D47

#44473D

Analogous

#3D3F47

#453D47

#403D47

Triadic

#403D47

#47403D

#3D4740

Split Complementary

#403D47

#47453D

#3F473D

Tetradic

#403D47

#473D3F

#44473D

#3D4745

Color Blindness Simulation

Original

#403D47

Protanopia

#3F3F45

Deuteranopia

#3F3F44

Tritanopia

#404342

Achromatopsia

#3E3E3E

CSS Usage

background-color: #403D47;
color: #403D47;
border-color: #403D47;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#EDECEE
200
#DAD9DE
300
#C0BDC6
400
#9E99A8
500
#7C7689
600
#635E6E
700
#4F4B58
800
#3E3B45
900
#2F2D34
950
#1E1D21

Contrast Checker

Text on white

10.62:1

AA Pass AAA Pass

Text on black

1.98:1

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