#312D8B

#312D8B

Color Values

HEX

#312D8B

RGB

49, 45, 139

HSL

242.6, 51.1%, 36.1%

HSV

242.6, 67.6%, 54.5%

CMYK

64.7%, 67.6%, 0.0%, 45.5%

OKLCH

0.3661 0.1506 277.8

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#312D8B

#878B2D

Analogous

#2D588B

#602D8B

#312D8B

Triadic

#312D8B

#8B312D

#2D8B31

Split Complementary

#312D8B

#8B602D

#588B2D

Tetradic

#312D8B

#8B2D58

#878B2D

#2D8B60

Color Blindness Simulation

Original

#312D8B

Protanopia

#2F2F74

Deuteranopia

#30306F

Tritanopia

#31625E

Achromatopsia

#353535

CSS Usage

background-color: #312D8B;
color: #312D8B;
border-color: #312D8B;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F4F4FB
100
#E6E5F5
200
#CBC9EE
300
#A5A3E1
400
#7570D1
500
#443EC1
600
#36329A
700
#2C287B
800
#221F60
900
#1C1A47
950
#12112D

Contrast Checker

Text on white

11.18:1

AA Pass AAA Pass

Text on black

1.88:1

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