#280C29

#280C29

Color Values

HEX

#280C29

RGB

40, 12, 41

HSL

297.9, 54.7%, 10.4%

HSV

297.9, 70.7%, 16.1%

CMYK

2.4%, 70.7%, 0.0%, 83.9%

OKLCH

0.2143 0.0655 326.2

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#280C29

#0D290C

Analogous

#1A0C29

#290C1C

#280C29

Triadic

#280C29

#29280C

#0C2928

Split Complementary

#280C29

#1C290C

#0C291A

Tetradic

#280C29

#291A0C

#0D290C

#0C1C29

Color Blindness Simulation

Original

#280C29

Protanopia

#1C1C22

Deuteranopia

#1E2020

Tritanopia

#271C1B

Achromatopsia

#141414

CSS Usage

background-color: #280C29;
color: #280C29;
border-color: #280C29;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#FBF4FB
100
#F5E5F5
200
#EDC8EF
300
#E1A0E3
400
#D16DD4
500
#C03AC5
600
#9A2E9E
700
#7B257E
800
#601D63
900
#471948
950
#2D102E

Contrast Checker

Text on white

17.87:1

AA Pass AAA Pass

Text on black

1.17:1

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