#3F699C

#3F699C

Color Values

HEX

#3F699C

RGB

63, 105, 156

HSL

212.9, 42.5%, 42.9%

HSV

212.9, 59.6%, 61.2%

CMYK

59.6%, 32.7%, 0.0%, 38.8%

OKLCH

0.5137 0.0942 254.2

Properties

Cool Dark Nearest: RAL 5007 Brilliant Blue

Color Harmonies

Complementary

#3F699C

#9C723F

Analogous

#3F979C

#433F9C

#3F699C

Triadic

#3F699C

#9C3F69

#699C3F

Split Complementary

#3F699C

#9C433F

#979C3F

Tetradic

#3F699C

#9C3F97

#9C723F

#3F9C43

Color Blindness Simulation

Original

#3F699C

Protanopia

#515290

Deuteranopia

#4F4C8D

Tritanopia

#418684

Achromatopsia

#646464

CSS Usage

background-color: #3F699C;
color: #3F699C;
border-color: #3F699C;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F5F7FA
100
#E7EDF4
200
#CCDAEA
300
#A8BFDC
400
#799DC9
500
#497AB6
600
#3B6291
700
#2F4E74
800
#253D5B
900
#1E2F43
950
#131D2A

Contrast Checker

Text on white

5.66:1

AA Pass AAA Fail

Text on black

3.71:1

AA Fail 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