#3F81D3

#3F81D3

Color Values

HEX

#3F81D3

RGB

63, 129, 211

HSL

213.2, 62.7%, 53.7%

HSV

213.2, 70.1%, 82.7%

CMYK

70.1%, 38.9%, 0.0%, 17.3%

OKLCH

0.6 0.1425 255.2

Properties

Cool Light Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#3F81D3

#D3913F

Analogous

#3FCBD3

#473FD3

#3F81D3

Triadic

#3F81D3

#D33F81

#81D33F

Split Complementary

#3F81D3

#D3473F

#CBD33F

Tetradic

#3F81D3

#D33FCB

#D3913F

#3FD347

Color Blindness Simulation

Original

#3F81D3

Protanopia

#5C5CBF

Deuteranopia

#5853BA

Tritanopia

#42AFAC

Achromatopsia

#797979

CSS Usage

background-color: #3F81D3;
color: #3F81D3;
border-color: #3F81D3;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F3F7FB
100
#E4ECF7
200
#C5D9F2
300
#9BBEE8
400
#659ADC
500
#3077CF
600
#265FA6
700
#1E4C85
800
#183B68
900
#152E4C
950
#0D1D30

Contrast Checker

Text on white

3.97:1

AA Fail AAA Fail

Text on black

5.29:1

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