#42434F

#42434F

Color Values

HEX

#42434F

RGB

66, 67, 79

HSL

235.4, 9.0%, 28.4%

HSV

235.4, 16.5%, 31.0%

CMYK

16.5%, 15.2%, 0.0%, 69.0%

OKLCH

0.3866 0.0203 281.6

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#42434F

#4F4E42

Analogous

#42494F

#47424F

#42434F

Triadic

#42434F

#4F4243

#434F42

Split Complementary

#42434F

#4F4742

#494F42

Tetradic

#42434F

#4F4249

#4F4E42

#424F47

Color Blindness Simulation

Original

#42434F

Protanopia

#42424C

Deuteranopia

#42424B

Tritanopia

#424A49

Achromatopsia

#444444

CSS Usage

background-color: #42434F;
color: #42434F;
border-color: #42434F;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#ECECEF
200
#D8D9DF
300
#BCBDC7
400
#9899A9
500
#74768B
600
#5D5E6F
700
#4A4B59
800
#3A3B45
900
#2D2D34
950
#1C1D21

Contrast Checker

Text on white

9.78:1

AA Pass AAA Pass

Text on black

2.15:1

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