#2F378A

#2F378A

Color Values

HEX

#2F378A

RGB

47, 55, 138

HSL

234.7, 49.2%, 36.3%

HSV

234.7, 65.9%, 54.1%

CMYK

65.9%, 60.1%, 0.0%, 45.9%

OKLCH

0.3823 0.1367 273.8

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#2F378A

#8A822F

Analogous

#2F658A

#552F8A

#2F378A

Triadic

#2F378A

#8A2F37

#378A2F

Split Complementary

#2F378A

#8A552F

#658A2F

Tetradic

#2F378A

#8A2F65

#8A822F

#2F8A55

Color Blindness Simulation

Original

#2F378A

Protanopia

#323376

Deuteranopia

#323171

Tritanopia

#2F6663

Achromatopsia

#3B3B3B

CSS Usage

background-color: #2F378A;
color: #2F378A;
border-color: #2F378A;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F4F5FB
100
#E6E7F5
200
#CACDED
300
#A4A9E0
400
#727ACF
500
#414CBE
600
#343D98
700
#29317A
800
#20265F
900
#1B1F46
950
#11132C

Contrast Checker

Text on white

10.32:1

AA Pass AAA Pass

Text on black

2.03:1

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