#23183D

#23183D

Color Values

HEX

#23183D

RGB

35, 24, 61

HSL

257.8, 43.5%, 16.7%

HSV

257.8, 60.7%, 23.9%

CMYK

42.6%, 60.7%, 0.0%, 76.1%

OKLCH

0.2445 0.0683 294.5

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#23183D

#323D18

Analogous

#18203D

#36183D

#23183D

Triadic

#23183D

#3D2318

#183D23

Split Complementary

#23183D

#3D3618

#203D18

Tetradic

#23183D

#3D1820

#323D18

#183D36

Color Blindness Simulation

Original

#23183D

Protanopia

#1E1E34

Deuteranopia

#1F2032

Tritanopia

#222D2B

Achromatopsia

#1D1D1D

CSS Usage

background-color: #23183D;
color: #23183D;
border-color: #23183D;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F6F5FA
100
#EAE7F4
200
#D5CCEB
300
#B7A7DC
400
#9078CA
500
#6948B7
600
#543A92
700
#432E75
800
#34245B
900
#291D43
950
#1A132B

Contrast Checker

Text on white

16.54:1

AA Pass AAA Pass

Text on black

1.27:1

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