#231E31

#231E31

Color Values

HEX

#231E31

RGB

35, 30, 49

HSL

255.8, 24.1%, 15.5%

HSV

255.8, 38.8%, 19.2%

CMYK

28.6%, 38.8%, 0.0%, 80.8%

OKLCH

0.25 0.036 295.8

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#231E31

#2C311E

Analogous

#1E2331

#2D1E31

#231E31

Triadic

#231E31

#31231E

#1E3123

Split Complementary

#231E31

#312D1E

#23311E

Tetradic

#231E31

#311E23

#2C311E

#1E312D

Color Blindness Simulation

Original

#231E31

Protanopia

#21212C

Deuteranopia

#21222B

Tritanopia

#232928

Achromatopsia

#202020

CSS Usage

background-color: #231E31;
color: #231E31;
border-color: #231E31;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F7F6F9
100
#EBE9F1
200
#D7D3E4
300
#BBB3D1
400
#968AB7
500
#71619E
600
#5A4D7F
700
#483E65
800
#38304F
900
#2B263B
950
#1B1825

Contrast Checker

Text on white

16.13:1

AA Pass AAA Pass

Text on black

1.3:1

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