#40565B

#40565B

Color Values

HEX

#40565B

RGB

64, 86, 91

HSL

191.1, 17.4%, 30.4%

HSV

191.1, 29.7%, 35.7%

CMYK

29.7%, 5.5%, 0.0%, 64.3%

OKLCH

0.437 0.028 213.2

Properties

Cool Dark Nearest: darkslategrey

Color Harmonies

Complementary

#40565B

#5B4540

Analogous

#405B53

#40495B

#40565B

Triadic

#40565B

#5B4056

#565B40

Split Complementary

#40565B

#5B4049

#5B5340

Tetradic

#40565B

#53405B

#5B4540

#495B40

Color Blindness Simulation

Original

#40565B

Protanopia

#4A4A5A

Deuteranopia

#48475A

Tritanopia

#415959

Achromatopsia

#525252

CSS Usage

background-color: #40565B;
color: #40565B;
border-color: #40565B;
Nearest Tailwind: Gray 600 #4B5563

Tailwind Shades

50
#F6F8F8
100
#EBEFF0
200
#D5DFE2
300
#B7C9CC
400
#90ABB1
500
#698D96
600
#547178
700
#435B60
800
#35474B
900
#293538
950
#1A2223

Contrast Checker

Text on white

7.78:1

AA Pass AAA Pass

Text on black

2.7:1

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