#231C3D

#231C3D

Color Values

HEX

#231C3D

RGB

35, 28, 61

HSL

252.7, 37.1%, 17.5%

HSV

252.7, 54.1%, 23.9%

CMYK

42.6%, 54.1%, 0.0%, 76.1%

OKLCH

0.2532 0.0608 291.2

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#231C3D

#363D1C

Analogous

#1C263D

#341C3D

#231C3D

Triadic

#231C3D

#3D231C

#1C3D23

Split Complementary

#231C3D

#3D341C

#263D1C

Tetradic

#231C3D

#3D1C26

#363D1C

#1C3D34

Color Blindness Simulation

Original

#231C3D

Protanopia

#202035

Deuteranopia

#202133

Tritanopia

#232F2D

Achromatopsia

#202020

CSS Usage

background-color: #231C3D;
color: #231C3D;
border-color: #231C3D;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F6F5FA
100
#EAE8F3
200
#D4CEE9
300
#B5ABD9
400
#8C7EC4
500
#6450AF
600
#50408C
700
#403370
800
#322857
900
#272041
950
#191429

Contrast Checker

Text on white

16.09:1

AA Pass AAA Pass

Text on black

1.3:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026