#281F66

#281F66

Color Values

HEX

#281F66

RGB

40, 31, 102

HSL

247.6, 53.4%, 26.1%

HSV

247.6, 69.6%, 40.0%

CMYK

60.8%, 69.6%, 0.0%, 60.0%

OKLCH

0.2992 0.119 282.2

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#281F66

#5D661F

Analogous

#1F3A66

#4C1F66

#281F66

Triadic

#281F66

#66281F

#1F6628

Split Complementary

#281F66

#664C1F

#3A661F

Tetradic

#281F66

#661F3A

#5D661F

#1F664C

Color Blindness Simulation

Original

#281F66

Protanopia

#242455

Deuteranopia

#252551

Tritanopia

#284744

Achromatopsia

#262626

CSS Usage

background-color: #281F66;
color: #281F66;
border-color: #281F66;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F4FB
100
#E7E5F5
200
#CDC8EE
300
#A9A1E2
400
#7B6ED3
500
#4D3BC4
600
#3D309C
700
#31267D
800
#261E62
900
#1F1948
950
#14102D

Contrast Checker

Text on white

14.21:1

AA Pass AAA Pass

Text on black

1.48:1

AA Fail AAA Fail

Related Articles

Tutorials

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

ม.ค. 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

ม.ค. 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

ม.ค. 15, 2026