#231830

#231830

Color Values

HEX

#231830

RGB

35, 24, 48

HSL

267.5, 33.3%, 14.1%

HSV

267.5, 50.0%, 18.8%

CMYK

27.1%, 50.0%, 0.0%, 81.2%

OKLCH

0.2352 0.047 304.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#231830

#253018

Analogous

#181930

#2F1830

#231830

Triadic

#231830

#302318

#183023

Split Complementary

#231830

#302F18

#193018

Tetradic

#231830

#301819

#253018

#18302F

Color Blindness Simulation

Original

#231830

Protanopia

#1E1E2A

Deuteranopia

#1F2029

Tritanopia

#222625

Achromatopsia

#1C1C1C

CSS Usage

background-color: #231830;
color: #231830;
border-color: #231830;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F7F5FA
100
#EDE8F2
200
#DACFE7
300
#C0ADD6
400
#9E81C0
500
#7C55AA
600
#634488
700
#4F366D
800
#3E2B55
900
#2F223F
950
#1E1528

Contrast Checker

Text on white

16.87:1

AA Pass AAA Pass

Text on black

1.24:1

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