#3F6C9B

#3F6C9B

Color Values

HEX

#3F6C9B

RGB

63, 108, 155

HSL

210.7, 42.2%, 42.7%

HSV

210.7, 59.4%, 60.8%

CMYK

59.4%, 30.3%, 0.0%, 39.2%

OKLCH

0.5202 0.0899 250.9

Properties

Cool Dark Nearest: steelblue 4

Color Harmonies

Complementary

#3F6C9B

#9B6E3F

Analogous

#3F9A9B

#403F9B

#3F6C9B

Triadic

#3F6C9B

#9B3F6C

#6C9B3F

Split Complementary

#3F6C9B

#9B403F

#9A9B3F

Tetradic

#3F6C9B

#9B3F9A

#9B6E3F

#3F9B40

Color Blindness Simulation

Original

#3F6C9B

Protanopia

#525390

Deuteranopia

#504C8D

Tritanopia

#418785

Achromatopsia

#666666

CSS Usage

background-color: #3F6C9B;
color: #3F6C9B;
border-color: #3F6C9B;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F5F7FA
100
#E7EDF4
200
#CCDBEA
300
#A8C1DC
400
#79A0C8
500
#4A7EB5
600
#3B6591
700
#2F5174
800
#253F5B
900
#1E3043
950
#131E2A

Contrast Checker

Text on white

5.48:1

AA Pass AAA Fail

Text on black

3.83:1

AA Fail 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