#40434C

#40434C

Color Values

HEX

#40434C

RGB

64, 67, 76

HSL

225.0, 8.6%, 27.5%

HSV

225.0, 15.8%, 29.8%

CMYK

15.8%, 11.8%, 0.0%, 70.2%

OKLCH

0.3835 0.0158 271.0

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#40434C

#4C4940

Analogous

#40494C

#43404C

#40434C

Triadic

#40434C

#4C4043

#434C40

Split Complementary

#40434C

#4C4340

#494C40

Tetradic

#40434C

#4C4049

#4C4940

#404C43

Color Blindness Simulation

Original

#40434C

Protanopia

#41414A

Deuteranopia

#414149

Tritanopia

#404848

Achromatopsia

#434343

CSS Usage

background-color: #40434C;
color: #40434C;
border-color: #40434C;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#ECECEE
200
#D8DADE
300
#BDBFC7
400
#999DA9
500
#757A8A
600
#5D626F
700
#4B4E59
800
#3A3D45
900
#2D2F34
950
#1C1D21

Contrast Checker

Text on white

9.88:1

AA Pass AAA Pass

Text on black

2.13:1

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