#3F4297

#3F4297

Color Values

HEX

#3F4297

RGB

63, 66, 151

HSL

238.0, 41.1%, 42.0%

HSV

238.0, 58.3%, 59.2%

CMYK

58.3%, 56.3%, 0.0%, 40.8%

OKLCH

0.4256 0.1364 277.4

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#3F4297

#97943F

Analogous

#3F6E97

#683F97

#3F4297

Triadic

#3F4297

#973F42

#42973F

Split Complementary

#3F4297

#97683F

#6E973F

Tetradic

#3F4297

#973F6E

#97943F

#3F9768

Color Blindness Simulation

Original

#3F4297

Protanopia

#404082

Deuteranopia

#40407D

Tritanopia

#3F726F

Achromatopsia

#474747

CSS Usage

background-color: #3F4297;
color: #3F4297;
border-color: #3F4297;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E7E7F3
200
#CDCEEA
300
#A9AADB
400
#7A7CC7
500
#4B4FB4
600
#3C3F90
700
#303273
800
#26275A
900
#1F2042
950
#13142A

Contrast Checker

Text on white

8.62:1

AA Pass AAA Pass

Text on black

2.44:1

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