#280631

#280631

Color Values

HEX

#280631

RGB

40, 6, 49

HSL

287.4, 78.2%, 10.8%

HSV

287.4, 87.8%, 19.2%

CMYK

18.4%, 87.8%, 0.0%, 80.8%

OKLCH

0.2114 0.0855 318.3

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#280631

#0F3106

Analogous

#120631

#310625

#280631

Triadic

#280631

#312806

#063128

Split Complementary

#280631

#253106

#063112

Tetradic

#280631

#311206

#0F3106

#062531

Color Blindness Simulation

Original

#280631

Protanopia

#191927

Deuteranopia

#1B1E24

Tritanopia

#261E1D

Achromatopsia

#101010

CSS Usage

background-color: #280631;
color: #280631;
border-color: #280631;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#FAF2FC
100
#F4E1F9
200
#EBBFF7
300
#DE92F2
400
#CB57EA
500
#B91CE3
600
#9416B6
700
#771291
800
#5D0E72
900
#440E53
950
#2B0934

Contrast Checker

Text on white

18.09:1

AA Pass AAA Pass

Text on black

1.16:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026