#404E65

#404E65

Color Values

HEX

#404E65

RGB

64, 78, 101

HSL

217.3, 22.4%, 32.4%

HSV

217.3, 36.6%, 39.6%

CMYK

36.6%, 22.8%, 0.0%, 60.4%

OKLCH

0.4214 0.0425 260.2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#404E65

#655740

Analogous

#406165

#454065

#404E65

Triadic

#404E65

#65404E

#4E6540

Split Complementary

#404E65

#654540

#616540

Tetradic

#404E65

#654061

#655740

#406545

Color Blindness Simulation

Original

#404E65

Protanopia

#46465F

Deuteranopia

#45445E

Tritanopia

#415B5A

Achromatopsia

#4D4D4D

CSS Usage

background-color: #404E65;
color: #404E65;
border-color: #404E65;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F7F9
100
#EAECF1
200
#D3D9E3
300
#B4BED0
400
#8C9CB6
500
#63799C
600
#4F607D
700
#3F4D64
800
#313C4E
900
#272E3A
950
#181D25

Contrast Checker

Text on white

8.41:1

AA Pass AAA Pass

Text on black

2.5:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026