#3F7CB7

#3F7CB7

Color Values

HEX

#3F7CB7

RGB

63, 124, 183

HSL

209.5, 48.8%, 48.2%

HSV

209.5, 65.6%, 71.8%

CMYK

65.6%, 32.2%, 0.0%, 28.2%

OKLCH

0.5727 0.1114 249.7

Properties

Cool Light Nearest: RAL 5012 Light Blue

Color Harmonies

Complementary

#3F7CB7

#B77A3F

Analogous

#3FB7B6

#3F40B7

#3F7CB7

Triadic

#3F7CB7

#B73F7C

#7CB73F

Split Complementary

#3F7CB7

#B73F40

#B7B63F

Tetradic

#3F7CB7

#B63FB7

#B77A3F

#40B73F

Color Blindness Simulation

Original

#3F7CB7

Protanopia

#595AA9

Deuteranopia

#5651A5

Tritanopia

#429D9B

Achromatopsia

#737373

CSS Usage

background-color: #3F7CB7;
color: #3F7CB7;
border-color: #3F7CB7;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F7FB
100
#E6EDF5
200
#CADCED
300
#A4C2E0
400
#73A1CF
500
#4181BE
600
#346798
700
#2A5279
800
#21405F
900
#1B3146
950
#111F2C

Contrast Checker

Text on white

4.39:1

AA Fail AAA Fail

Text on black

4.78:1

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