#312B51

#312B51

Color Values

HEX

#312B51

RGB

49, 43, 81

HSL

249.5, 30.6%, 24.3%

HSV

249.5, 46.9%, 31.8%

CMYK

39.5%, 46.9%, 0.0%, 68.2%

OKLCH

0.3151 0.0667 289.2

Properties

Cool Dark Nearest: RAL 5022 Night Blue

Color Harmonies

Complementary

#312B51

#4B512B

Analogous

#2B3851

#442B51

#312B51

Triadic

#312B51

#51312B

#2B5131

Split Complementary

#312B51

#51442B

#38512B

Tetradic

#312B51

#512B38

#4B512B

#2B5144

Color Blindness Simulation

Original

#312B51

Protanopia

#2E2E48

Deuteranopia

#2F2F46

Tritanopia

#31413F

Achromatopsia

#2F2F2F

CSS Usage

background-color: #312B51;
color: #312B51;
border-color: #312B51;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F6F5F9
100
#EAE9F2
200
#D4D0E6
300
#B5AFD5
400
#8D84BE
500
#6558A7
600
#514785
700
#41396B
800
#322C53
900
#27233E
950
#191627

Contrast Checker

Text on white

13.17:1

AA Pass AAA Pass

Text on black

1.59:1

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