#231031

#231031

Color Values

HEX

#231031

RGB

35, 16, 49

HSL

274.5, 50.8%, 12.7%

HSV

274.5, 67.3%, 19.2%

CMYK

28.6%, 67.3%, 0.0%, 80.8%

OKLCH

0.2192 0.0652 308.5

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#231031

#1E3110

Analogous

#121031

#31102E

#231031

Triadic

#231031

#312310

#103123

Split Complementary

#231031

#2E3110

#103112

Tetradic

#231031

#311210

#1E3110

#102E31

Color Blindness Simulation

Original

#231031

Protanopia

#1B1B29

Deuteranopia

#1C1D27

Tritanopia

#222321

Achromatopsia

#161616

CSS Usage

background-color: #231031;
color: #231031;
border-color: #231031;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F8F4FB
100
#EEE5F5
200
#DEC9ED
300
#C6A3E1
400
#A871D1
500
#893FC0
600
#6E329A
700
#58287B
800
#451F60
900
#341A47
950
#21112D

Contrast Checker

Text on white

17.65:1

AA Pass AAA Pass

Text on black

1.19:1

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