#282C4B

#282C4B

Color Values

HEX

#282C4B

RGB

40, 44, 75

HSL

233.1, 30.4%, 22.5%

HSV

233.1, 46.7%, 29.4%

CMYK

46.7%, 41.3%, 0.0%, 70.6%

OKLCH

0.3051 0.056 276.9

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#282C4B

#4B4728

Analogous

#283D4B

#35284B

#282C4B

Triadic

#282C4B

#4B282C

#2C4B28

Split Complementary

#282C4B

#4B3528

#3D4B28

Tetradic

#282C4B

#4B283D

#4B4728

#284B35

Color Blindness Simulation

Original

#282C4B

Protanopia

#2A2A44

Deuteranopia

#2A2942

Tritanopia

#283E3C

Achromatopsia

#2D2D2D

CSS Usage

background-color: #282C4B;
color: #282C4B;
border-color: #282C4B;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F5F6F9
100
#E9EAF2
200
#D0D3E6
300
#AFB3D4
400
#848BBD
500
#5962A6
600
#474E85
700
#393E6A
800
#2C3153
900
#23263E
950
#161827

Contrast Checker

Text on white

13.53:1

AA Pass AAA Pass

Text on black

1.55:1

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