#283F71

#283F71

Color Values

HEX

#283F71

RGB

40, 63, 113

HSL

221.1, 47.7%, 30.0%

HSV

221.1, 64.6%, 44.3%

CMYK

64.6%, 44.2%, 0.0%, 55.7%

OKLCH

0.376 0.0905 264.0

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#283F71

#715A28

Analogous

#286371

#362871

#283F71

Triadic

#283F71

#71283F

#3F7128

Split Complementary

#283F71

#713628

#637128

Tetradic

#283F71

#712863

#715A28

#287136

Color Blindness Simulation

Original

#283F71

Protanopia

#323265

Deuteranopia

#312F62

Tritanopia

#295B59

Achromatopsia

#3E3E3E

CSS Usage

background-color: #283F71;
color: #283F71;
border-color: #283F71;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F4F6FA
100
#E6EAF4
200
#CAD5EC
300
#A5B7DF
400
#7490CE
500
#4369BC
600
#355497
700
#2B4379
800
#21345E
900
#1C2945
950
#111A2C

Contrast Checker

Text on white

10.3:1

AA Pass AAA Pass

Text on black

2.04:1

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