#3F80CB

#3F80CB

Color Values

HEX

#3F80CB

RGB

63, 128, 203

HSL

212.1, 57.4%, 52.2%

HSV

212.1, 69.0%, 79.6%

CMYK

69.0%, 36.9%, 0.0%, 20.4%

OKLCH

0.593 0.1331 253.7

Properties

Cool Light Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#3F80CB

#CB8A3F

Analogous

#3FC6CB

#443FCB

#3F80CB

Triadic

#3F80CB

#CB3F80

#80CB3F

Split Complementary

#3F80CB

#CB443F

#C6CB3F

Tetradic

#3F80CB

#CB3FC6

#CB8A3F

#3FCB44

Color Blindness Simulation

Original

#3F80CB

Protanopia

#5B5CB9

Deuteranopia

#5752B4

Tritanopia

#42ABA7

Achromatopsia

#787878

CSS Usage

background-color: #3F80CB;
color: #3F80CB;
border-color: #3F80CB;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F7FB
100
#E4EDF6
200
#C7DAF0
300
#9FBFE5
400
#6A9DD7
500
#367AC9
600
#2B62A1
700
#234E80
800
#1B3D64
900
#172F49
950
#0F1D2E

Contrast Checker

Text on white

4.07:1

AA Fail AAA Fail

Text on black

5.16:1

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