#404047

#404047

Color Values

HEX

#404047

RGB

64, 64, 71

HSL

240.0, 5.2%, 26.5%

HSV

240.0, 9.9%, 27.8%

CMYK

9.9%, 9.9%, 0.0%, 72.2%

OKLCH

0.3741 0.0118 285.8

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#404047

#474740

Analogous

#404447

#444047

#404047

Triadic

#404047

#474040

#404740

Split Complementary

#404047

#474440

#444740

Tetradic

#404047

#474044

#474740

#404744

Color Blindness Simulation

Original

#404047

Protanopia

#404045

Deuteranopia

#404045

Tritanopia

#404444

Achromatopsia

#414141

CSS Usage

background-color: #404047;
color: #404047;
border-color: #404047;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#ECECEE
200
#D9D9DD
300
#BFBFC5
400
#9C9CA6
500
#797986
600
#61616B
700
#4D4D56
800
#3C3C43
900
#2E2E33
950
#1D1D20

Contrast Checker

Text on white

10.28:1

AA Pass AAA Pass

Text on black

2.04:1

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