#404C5F

#404C5F

Color Values

HEX

#404C5F

RGB

64, 76, 95

HSL

216.8, 19.5%, 31.2%

HSV

216.8, 32.6%, 37.3%

CMYK

32.6%, 20.0%, 0.0%, 62.7%

OKLCH

0.4138 0.0355 259.5

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#404C5F

#5F5340

Analogous

#405C5F

#44405F

#404C5F

Triadic

#404C5F

#5F404C

#4C5F40

Split Complementary

#404C5F

#5F4440

#5C5F40

Tetradic

#404C5F

#5F405C

#5F5340

#405F44

Color Blindness Simulation

Original

#404C5F

Protanopia

#45455A

Deuteranopia

#444459

Tritanopia

#415756

Achromatopsia

#4B4B4B

CSS Usage

background-color: #404C5F;
color: #404C5F;
border-color: #404C5F;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F7F9
100
#EAECF0
200
#D4DAE2
300
#B6BFCE
400
#8E9CB3
500
#677A98
600
#52617A
700
#424E62
800
#333D4C
900
#282F39
950
#191D24

Contrast Checker

Text on white

8.69:1

AA Pass AAA Pass

Text on black

2.42:1

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