#3F6181

#3F6181

Color Values

HEX

#3F6181

RGB

63, 97, 129

HSL

209.1, 34.4%, 37.6%

HSV

209.1, 51.2%, 50.6%

CMYK

51.2%, 24.8%, 0.0%, 49.4%

OKLCH

0.4805 0.0653 247.9

Properties

Cool Dark Nearest: steelblue 4

Color Harmonies

Complementary

#3F6181

#815F3F

Analogous

#3F8180

#3F4081

#3F6181

Triadic

#3F6181

#813F61

#61813F

Split Complementary

#3F6181

#813F40

#81803F

Tetradic

#3F6181

#803F81

#815F3F

#40813F

Color Blindness Simulation

Original

#3F6181

Protanopia

#4E4E79

Deuteranopia

#4C4977

Tritanopia

#417372

Achromatopsia

#5C5C5C

CSS Usage

background-color: #3F6181;
color: #3F6181;
border-color: #3F6181;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F5F7FA
100
#E8EDF2
200
#CFDCE8
300
#ADC2D7
400
#80A2C1
500
#5481AB
600
#436789
700
#36526E
800
#2A4056
900
#21313F
950
#151F28

Contrast Checker

Text on white

6.49:1

AA Pass AAA Fail

Text on black

3.24:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026