#287CC9

#287CC9

Color Values

HEX

#287CC9

RGB

40, 124, 201

HSL

208.7, 66.8%, 47.3%

HSV

208.7, 80.1%, 78.8%

CMYK

80.1%, 38.3%, 0.0%, 21.2%

OKLCH

0.5755 0.1422 250.4

Properties

Cool Light Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#287CC9

#C97528

Analogous

#28C9C6

#282CC9

#287CC9

Triadic

#287CC9

#C9287C

#7CC928

Split Complementary

#287CC9

#C9282C

#C9C628

Tetradic

#287CC9

#C628C9

#C97528

#2CC928

Color Blindness Simulation

Original

#287CC9

Protanopia

#4C4DB6

Deuteranopia

#4841B2

Tritanopia

#2CA8A4

Achromatopsia

#707070

CSS Usage

background-color: #287CC9;
color: #287CC9;
border-color: #287CC9;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F3F8FC
100
#E3EEF7
200
#C3DCF3
300
#99C4EB
400
#62A3E0
500
#2A83D5
600
#2269AA
700
#1B5488
800
#15426A
900
#13324E
950
#0C1F31

Contrast Checker

Text on white

4.36:1

AA Fail AAA Fail

Text on black

4.82:1

AA Pass AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026