#3F7FB9

#3F7FB9

Color Values

HEX

#3F7FB9

RGB

63, 127, 185

HSL

208.5, 49.2%, 48.6%

HSV

208.5, 65.9%, 72.5%

CMYK

65.9%, 31.4%, 0.0%, 27.5%

OKLCH

0.5807 0.1112 248.2

Properties

Cool Light Nearest: RAL 5012 Light Blue

Color Harmonies

Complementary

#3F7FB9

#B9793F

Analogous

#3FB9B6

#3F42B9

#3F7FB9

Triadic

#3F7FB9

#B93F7F

#7FB93F

Split Complementary

#3F7FB9

#B93F42

#B9B63F

Tetradic

#3F7FB9

#B63FB9

#B9793F

#42B93F

Color Blindness Simulation

Original

#3F7FB9

Protanopia

#5B5BAB

Deuteranopia

#5752A8

Tritanopia

#42A09D

Achromatopsia

#767676

CSS Usage

background-color: #3F7FB9;
color: #3F7FB9;
border-color: #3F7FB9;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F8FB
100
#E6EEF5
200
#CADCED
300
#A4C3E0
400
#72A3CF
500
#4183BE
600
#346998
700
#29547A
800
#20415F
900
#1B3246
950
#111F2C

Contrast Checker

Text on white

4.24:1

AA Fail AAA Fail

Text on black

4.95:1

AA Pass AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026