#281B44

#281B44

Color Values

HEX

#281B44

RGB

40, 27, 68

HSL

259,0, 43,2%, 18,6%

HSV

259,0, 60,3%, 26,7%

CMYK

41,2%, 60,3%, 0,0%, 73,3%

OKLCH

0,262 0,0744 295,4

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#281B44

#37441B

Analogous

#1B2244

#3C1B44

#281B44

Triadic

#281B44

#44281B

#1B4428

Split Complementary

#281B44

#443C1B

#22441B

Tetradic

#281B44

#441B22

#37441B

#1B443C

Color Blindness Simulation

Original

#281B44

Protanopia

#22223A

Deuteranopia

#232438

Tritanopia

#273231

Achromatopsia

#212121

CSS Usage

background-color: #281B44;
color: #281B44;
border-color: #281B44;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F6F5FA
100
#EBE7F4
200
#D6CCEB
300
#B8A7DC
400
#9278C9
500
#6B48B7
600
#563A92
700
#452E75
800
#36245B
900
#2A1E43
950
#1A132A

Contrast Checker

Text on white

15,78:1

AA Pass AAA Pass

Text on black

1,33:1

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