#281D5C

#281D5C

Color Values

HEX

#281D5C

RGB

40, 29, 92

HSL

250.5, 52.1%, 23.7%

HSV

250.5, 68.5%, 36.1%

CMYK

56.5%, 68.5%, 0.0%, 63.9%

OKLCH

0.2863 0.1074 285.4

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#281D5C

#515C1D

Analogous

#1D315C

#471D5C

#281D5C

Triadic

#281D5C

#5C281D

#1D5C28

Split Complementary

#281D5C

#5C471D

#315C1D

Tetradic

#281D5C

#5C1D31

#515C1D

#1D5C47

Color Blindness Simulation

Original

#281D5C

Protanopia

#23234D

Deuteranopia

#242549

Tritanopia

#27413E

Achromatopsia

#242424

CSS Usage

background-color: #281D5C;
color: #281D5C;
border-color: #281D5C;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F5F4FB
100
#E8E5F5
200
#CFC9EE
300
#ADA2E2
400
#816FD2
500
#543DC2
600
#43319B
700
#36277C
800
#2A1F61
900
#221A47
950
#15102D

Contrast Checker

Text on white

14.78:1

AA Pass AAA Pass

Text on black

1.42:1

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