#283391

#283391

Color Values

HEX

#283391

RGB

40, 51, 145

HSL

233.7, 56.8%, 36.3%

HSV

233.7, 72.4%, 56.9%

CMYK

72.4%, 64.8%, 0.0%, 43.1%

OKLCH

0.3765 0.1537 271.6

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#283391

#918628

Analogous

#286891

#522891

#283391

Triadic

#283391

#912833

#339128

Split Complementary

#283391

#915228

#689128

Tetradic

#283391

#912868

#918628

#289152

Color Blindness Simulation

Original

#283391

Protanopia

#2D2D7A

Deuteranopia

#2C2B75

Tritanopia

#296864

Achromatopsia

#373737

CSS Usage

background-color: #283391;
color: #283391;
border-color: #283391;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F4F4FB
100
#E5E6F6
200
#C7CBF0
300
#9FA6E5
400
#6B76D6
500
#3746C8
600
#2C38A0
700
#232D80
800
#1C2364
900
#181D49
950
#0F122E

Contrast Checker

Text on white

10.65:1

AA Pass AAA Pass

Text on black

1.97:1

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