#3F7381

#3F7381

Color Values

HEX

#3F7381

RGB

63, 115, 129

HSL

192.7, 34.4%, 37.6%

HSV

192.7, 51.2%, 50.6%

CMYK

51.2%, 10.9%, 0.0%, 49.4%

OKLCH

0.525 0.0597 217.2

Properties

Cool Dark Nearest: RAL 5021 Water Blue

Color Harmonies

Complementary

#3F7381

#814D3F

Analogous

#3F816E

#3F5281

#3F7381

Triadic

#3F7381

#813F73

#73813F

Split Complementary

#3F7381

#813F52

#816E3F

Tetradic

#3F7381

#6E3F81

#814D3F

#52813F

Color Blindness Simulation

Original

#3F7381

Protanopia

#56567E

Deuteranopia

#524F7D

Tritanopia

#427B7A

Achromatopsia

#696969

CSS Usage

background-color: #3F7381;
color: #3F7381;
border-color: #3F7381;
Nearest Tailwind: Cyan 700 #0E7490

Tailwind Shades

50
#F5F9FA
100
#E8F0F2
200
#CFE2E8
300
#ADCED7
400
#80B3C1
500
#5499AB
600
#437A89
700
#36626E
800
#2A4C56
900
#21393F
950
#152428

Contrast Checker

Text on white

5.28:1

AA Pass AAA Fail

Text on black

3.98:1

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