#281531

#281531

Color Values

HEX

#281531

RGB

40, 21, 49

HSL

280.7, 40.0%, 13.7%

HSV

280.7, 57.1%, 19.2%

CMYK

18.4%, 57.1%, 0.0%, 80.8%

OKLCH

0.2361 0.0573 314.0

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#281531

#1E3115

Analogous

#1A1531

#31152C

#281531

Triadic

#281531

#312815

#153128

Split Complementary

#281531

#2C3115

#15311A

Tetradic

#281531

#311A15

#1E3115

#152C31

Color Blindness Simulation

Original

#281531

Protanopia

#20202A

Deuteranopia

#212229

Tritanopia

#272524

Achromatopsia

#1B1B1B

CSS Usage

background-color: #281531;
color: #281531;
border-color: #281531;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F8F5FA
100
#EFE7F3
200
#E0CDEA
300
#CBA9DA
400
#AE7BC6
500
#924CB2
600
#753D8F
700
#5D3172
800
#492659
900
#371F42
950
#23142A

Contrast Checker

Text on white

16.91:1

AA Pass AAA Pass

Text on black

1.24:1

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