#283C97

#283C97

Color Values

HEX

#283C97

RGB

40, 60, 151

HSL

229,2, 58,1%, 37,5%

HSV

229,2, 73,5%, 59,2%

CMYK

73,5%, 60,3%, 0,0%, 40,8%

OKLCH

0,3992 0,1506 269,0

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#283C97

#978328

Analogous

#287497

#4C2897

#283C97

Triadic

#283C97

#97283C

#3C9728

Split Complementary

#283C97

#974C28

#749728

Tetradic

#283C97

#972874

#978328

#28974C

Color Blindness Simulation

Original

#283C97

Protanopia

#313181

Deuteranopia

#302E7C

Tritanopia

#29706C

Achromatopsia

#3E3E3E

CSS Usage

background-color: #283C97;
color: #283C97;
border-color: #283C97;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FB
100
#E4E8F6
200
#C7CEF0
300
#9EABE5
400
#6A7ED7
500
#3550CA
600
#2B40A1
700
#223381
800
#1B2865
900
#17204A
950
#0F142F

Contrast Checker

Text on white

9,62:1

AA Pass AAA Pass

Text on black

2,18:1

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