#3F5C6B

#3F5C6B

Color Values

HEX

#3F5C6B

RGB

63, 92, 107

HSL

200.5, 25.9%, 33.3%

HSV

200.5, 41.1%, 42.0%

CMYK

41.1%, 14.0%, 0.0%, 58.0%

OKLCH

0.458 0.0421 231.4

Properties

Cool Dark Nearest: RAL 5025 Pearl Gentian Blue

Color Harmonies

Complementary

#3F5C6B

#6B4E3F

Analogous

#3F6B64

#3F466B

#3F5C6B

Triadic

#3F5C6B

#6B3F5C

#5C6B3F

Split Complementary

#3F5C6B

#6B3F46

#6B643F

Tetradic

#3F5C6B

#643F6B

#6B4E3F

#466B3F

Color Blindness Simulation

Original

#3F5C6B

Protanopia

#4C4C67

Deuteranopia

#4A4866

Tritanopia

#406564

Achromatopsia

#575757

CSS Usage

background-color: #3F5C6B;
color: #3F5C6B;
border-color: #3F5C6B;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F8F9
100
#E9EEF1
200
#D2DEE5
300
#B2C7D2
400
#88A8B9
500
#5E8AA1
600
#4C6E80
700
#3C5867
800
#2F4550
900
#25343C
950
#172126

Contrast Checker

Text on white

7.11:1

AA Pass AAA Pass

Text on black

2.95:1

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