#287CD3

#287CD3

Color Values

HEX

#287CD3

RGB

40, 124, 211

HSL

210,5, 68,1%, 49,2%

HSV

210,5, 81,0%, 82,7%

CMYK

81,0%, 41,2%, 0,0%, 17,3%

OKLCH

0,5817 0,1549 252,9

Properties

Cool Light Nearest: dodgerblue 3

Color Harmonies

Complementary

#287CD3

#D37F28

Analogous

#28D1D3

#2928D3

#287CD3

Triadic

#287CD3

#D3287C

#7CD328

Split Complementary

#287CD3

#D32928

#D1D328

Tetradic

#287CD3

#D328D1

#D37F28

#28D329

Color Blindness Simulation

Original

#287CD3

Protanopia

#4C4DBE

Deuteranopia

#4841B9

Tritanopia

#2CADAA

Achromatopsia

#707070

CSS Usage

background-color: #287CD3;
color: #287CD3;
border-color: #287CD3;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F3F7FC
100
#E3EDF7
200
#C3DBF4
300
#98C1EB
400
#60A0E1
500
#297ED6
600
#2165AB
700
#1A5189
800
#143F6B
900
#13304E
950
#0C1E31

Contrast Checker

Text on white

4,27:1

AA Fail AAA Fail

Text on black

4,91:1

AA Pass AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026