#404753

#404753

Color Values

HEX

#404753

RGB

64, 71, 83

HSL

217.9, 12.9%, 28.8%

HSV

217.9, 22.9%, 32.5%

CMYK

22.9%, 14.5%, 0.0%, 67.5%

OKLCH

0.3962 0.0223 261.2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#404753

#534C40

Analogous

#405053

#424053

#404753

Triadic

#404753

#534047

#475340

Split Complementary

#404753

#534240

#505340

Tetradic

#404753

#534050

#534C40

#405342

Color Blindness Simulation

Original

#404753

Protanopia

#434350

Deuteranopia

#43424F

Tritanopia

#404E4D

Achromatopsia

#464646

CSS Usage

background-color: #404753;
color: #404753;
border-color: #404753;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F7F7F8
100
#EBEDEF
200
#D7DAE0
300
#BAC0CA
400
#949DAD
500
#6F7B90
600
#596373
700
#474F5C
800
#383E48
900
#2B2F36
950
#1B1E22

Contrast Checker

Text on white

9.36:1

AA Pass AAA Pass

Text on black

2.24:1

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