#3F81DB

#3F81DB

Color Values

HEX

#3F81DB

RGB

63, 129, 219

HSL

214.6, 68.4%, 55.3%

HSV

214.6, 71.2%, 85.9%

CMYK

71.2%, 41.1%, 0.0%, 14.1%

OKLCH

0.6048 0.1529 256.9

Properties

Cool Light Nearest: dodgerblue 3

Color Harmonies

Complementary

#3F81DB

#DB993F

Analogous

#3FCFDB

#4B3FDB

#3F81DB

Triadic

#3F81DB

#DB3F81

#81DB3F

Split Complementary

#3F81DB

#DB4B3F

#CFDB3F

Tetradic

#3F81DB

#DB3FCF

#DB993F

#3FDB4B

Color Blindness Simulation

Original

#3F81DB

Protanopia

#5C5CC5

Deuteranopia

#5853C0

Tritanopia

#42B4B0

Achromatopsia

#797979

CSS Usage

background-color: #3F81DB;
color: #3F81DB;
border-color: #3F81DB;
Nearest Tailwind: Blue 400 #60A5FA

Tailwind Shades

50
#F3F7FC
100
#E3ECF8
200
#C3D8F4
300
#98BBEC
400
#6097E1
500
#2872D7
600
#205BAC
700
#1A4989
800
#14396B
900
#132C4E
950
#0C1C31

Contrast Checker

Text on white

3.91:1

AA Fail AAA Fail

Text on black

5.37:1

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