#331A3B

#331A3B

Color Values

HEX

#331A3B

RGB

51, 26, 59

HSL

285.5, 38.8%, 16.7%

HSV

285.5, 55.9%, 23.1%

CMYK

13.6%, 55.9%, 0.0%, 76.9%

OKLCH

0.268 0.067 317.5

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#331A3B

#223B1A

Analogous

#231A3B

#3B1A33

#331A3B

Triadic

#331A3B

#3B331A

#1A3B33

Split Complementary

#331A3B

#333B1A

#1A3B23

Tetradic

#331A3B

#3B231A

#223B1A

#1A333B

Color Blindness Simulation

Original

#331A3B

Protanopia

#282833

Deuteranopia

#2A2B31

Tritanopia

#322D2B

Achromatopsia

#222222

CSS Usage

background-color: #331A3B;
color: #331A3B;
border-color: #331A3B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F9F5FA
100
#F0E7F3
200
#E2CDE9
300
#CEAADA
400
#B47CC5
500
#994EB1
600
#7A3E8E
700
#623271
800
#4D2758
900
#392041
950
#241429

Contrast Checker

Text on white

15.54:1

AA Pass AAA Pass

Text on black

1.35:1

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