#231B34

#231B34

Color Values

HEX

#231B34

RGB

35, 27, 52

HSL

259.2, 31.6%, 15.5%

HSV

259.2, 48.1%, 20.4%

CMYK

32.7%, 48.1%, 0.0%, 79.6%

OKLCH

0.2446 0.0474 297.5

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#231B34

#2C341B

Analogous

#1B2034

#301B34

#231B34

Triadic

#231B34

#34231B

#1B3423

Split Complementary

#231B34

#34301B

#20341B

Tetradic

#231B34

#341B20

#2C341B

#1B3430

Color Blindness Simulation

Original

#231B34

Protanopia

#201F2E

Deuteranopia

#20212C

Tritanopia

#232928

Achromatopsia

#1F1F1F

CSS Usage

background-color: #231B34;
color: #231B34;
border-color: #231B34;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F7F5F9
100
#EBE8F2
200
#D7D0E7
300
#BBAED5
400
#9683BE
500
#7157A8
600
#5A4686
700
#48386B
800
#382C54
900
#2B233E
950
#1B1627

Contrast Checker

Text on white

16.43:1

AA Pass AAA Pass

Text on black

1.28:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026