#283F97

#283F97

Color Values

HEX

#283F97

RGB

40, 63, 151

HSL

227,6, 58,1%, 37,5%

HSV

227,6, 73,5%, 59,2%

CMYK

73,5%, 58,3%, 0,0%, 40,8%

OKLCH

0,4053 0,1468 268,0

Properties

Cool Dark Nearest: royalblue 4

Color Harmonies

Complementary

#283F97

#978028

Analogous

#287797

#492897

#283F97

Triadic

#283F97

#97283F

#3F9728

Split Complementary

#283F97

#974928

#779728

Tetradic

#283F97

#972877

#978028

#289749

Color Blindness Simulation

Original

#283F97

Protanopia

#323282

Deuteranopia

#312F7D

Tritanopia

#29716D

Achromatopsia

#404040

CSS Usage

background-color: #283F97;
color: #283F97;
border-color: #283F97;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FB
100
#E4E8F6
200
#C7CFF0
300
#9EADE5
400
#6A80D7
500
#3554CA
600
#2B43A1
700
#223681
800
#1B2A65
900
#17224A
950
#0F152F

Contrast Checker

Text on white

9,34:1

AA Pass AAA Pass

Text on black

2,25:1

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