#100C23

#100C23

Color Values

HEX

#100C23

RGB

16, 12, 35

HSL

250.4, 48.9%, 9.2%

HSV

250.4, 65.7%, 13.7%

CMYK

54.3%, 65.7%, 0.0%, 86.3%

OKLCH

0.1743 0.0462 288.7

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#100C23

#1F230C

Analogous

#0C1323

#1B0C23

#100C23

Triadic

#100C23

#23100C

#0C2310

Split Complementary

#100C23

#231B0C

#13230C

Tetradic

#100C23

#230C13

#1F230C

#0C231B

Color Blindness Simulation

Original

#100C23

Protanopia

#0E0E1D

Deuteranopia

#0E0F1C

Tritanopia

#101918

Achromatopsia

#0F0F0F

CSS Usage

background-color: #100C23;
color: #100C23;
border-color: #100C23;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F4FB
100
#E8E6F5
200
#D0CAED
300
#AEA4E0
400
#8373CF
500
#5741BE
600
#453498
700
#382A7A
800
#2B215F
900
#231B46
950
#16112C

Contrast Checker

Text on white

19.11:1

AA Pass AAA Pass

Text on black

1.1:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026