#28313D

#28313D

Color Values

HEX

#28313D

RGB

40, 49, 61

HSL

214.3, 20.8%, 19.8%

HSV

214.3, 34.4%, 23.9%

CMYK

34.4%, 19.7%, 0.0%, 76.1%

OKLCH

0.31 0.025 255.7

Properties

Cool Dark Nearest: RAL 7026 Granite Grey

Color Harmonies

Complementary

#28313D

#3D3428

Analogous

#283B3D

#29283D

#28313D

Triadic

#28313D

#3D2831

#313D28

Split Complementary

#28313D

#3D2928

#3B3D28

Tetradic

#28313D

#3D283B

#3D3428

#283D29

Color Blindness Simulation

Original

#28313D

Protanopia

#2C2C3A

Deuteranopia

#2B2B39

Tritanopia

#283837

Achromatopsia

#303030

CSS Usage

background-color: #28313D;
color: #28313D;
border-color: #28313D;
Nearest Tailwind: Gray 800 #1F2937

Tailwind Shades

50
#F6F7F9
100
#EAEDF0
200
#D4DAE3
300
#B5C0CF
400
#8D9EB4
500
#657C9A
600
#51637B
700
#414F63
800
#323E4D
900
#272F3A
950
#191E24

Contrast Checker

Text on white

13.15:1

AA Pass AAA Pass

Text on black

1.6:1

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