#423F56

#423F56

Color Values

HEX

#423F56

RGB

66, 63, 86

HSL

247.8, 15.4%, 29.2%

HSV

247.8, 26.7%, 33.7%

CMYK

23.3%, 26.7%, 0.0%, 66.3%

OKLCH

0.3803 0.039 290.4

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#423F56

#53563F

Analogous

#3F4756

#4D3F56

#423F56

Triadic

#423F56

#56423F

#3F5642

Split Complementary

#423F56

#564D3F

#47563F

Tetradic

#423F56

#563F47

#53563F

#3F564D

Color Blindness Simulation

Original

#423F56

Protanopia

#414150

Deuteranopia

#41414F

Tritanopia

#424C4B

Achromatopsia

#414141

CSS Usage

background-color: #423F56;
color: #423F56;
border-color: #423F56;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F7F6F8
100
#EBEBEF
200
#D7D6E1
300
#BBB8CB
400
#9692AF
500
#716C93
600
#5A5676
700
#48455E
800
#38364A
900
#2B2A37
950
#1B1A23

Contrast Checker

Text on white

10.11:1

AA Pass AAA Pass

Text on black

2.08:1

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