#3D4258

#3D4258

Color Values

HEX

#3D4258

RGB

61, 66, 88

HSL

228.9, 18.1%, 29.2%

HSV

228.9, 30.7%, 34.5%

CMYK

30.7%, 25.0%, 0.0%, 65.5%

OKLCH

0.3838 0.0381 274.5

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#3D4258

#58533D

Analogous

#3D4F58

#453D58

#3D4258

Triadic

#3D4258

#583D42

#42583D

Split Complementary

#3D4258

#58453D

#4F583D

Tetradic

#3D4258

#583D4F

#58533D

#3D5845

Color Blindness Simulation

Original

#3D4258

Protanopia

#3F3F53

Deuteranopia

#3F3E51

Tritanopia

#3D4E4E

Achromatopsia

#434343

CSS Usage

background-color: #3D4258;
color: #3D4258;
border-color: #3D4258;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F6F7F9
100
#EAEBF0
200
#D5D7E2
300
#B7BBCD
400
#9096B2
500
#687197
600
#545A78
700
#434860
800
#34384B
900
#292B38
950
#1A1B24

Contrast Checker

Text on white

9.91:1

AA Pass AAA Pass

Text on black

2.12:1

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