#283A97

#283A97

Color Values

HEX

#283A97

RGB

40, 58, 151

HSL

230.3, 58.1%, 37.5%

HSV

230.3, 73.5%, 59.2%

CMYK

73.5%, 61.6%, 0.0%, 40.8%

OKLCH

0.3953 0.1532 269.6

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#283A97

#978528

Analogous

#287297

#4E2897

#283A97

Triadic

#283A97

#97283A

#3A9728

Split Complementary

#283A97

#974E28

#729728

Tetradic

#283A97

#972872

#978528

#28974E

Color Blindness Simulation

Original

#283A97

Protanopia

#303081

Deuteranopia

#2F2D7B

Tritanopia

#296F6B

Achromatopsia

#3D3D3D

CSS Usage

background-color: #283A97;
color: #283A97;
border-color: #283A97;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F4F5FB
100
#E4E7F6
200
#C7CDF0
300
#9EAAE5
400
#6A7CD7
500
#354DCA
600
#2B3EA1
700
#223281
800
#1B2765
900
#171F4A
950
#0F142F

Contrast Checker

Text on white

9.8:1

AA Pass AAA Pass

Text on black

2.14:1

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