#101040

#101040

Color Values

HEX

#101040

RGB

16, 16, 64

HSL

240.0, 60.0%, 15.7%

HSV

240.0, 75.0%, 25.1%

CMYK

75.0%, 75.0%, 0.0%, 74.9%

OKLCH

0.2117 0.0885 275.7

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#101040

#404010

Analogous

#102840

#281040

#101040

Triadic

#101040

#401010

#104010

Split Complementary

#101040

#402810

#284010

Tetradic

#101040

#401028

#404010

#104028

Color Blindness Simulation

Original

#101040

Protanopia

#101034

Deuteranopia

#101032

Tritanopia

#102B29

Achromatopsia

#131313

CSS Usage

background-color: #101040;
color: #101040;
border-color: #101040;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F3F3FB
100
#E4E4F6
200
#C6C6F1
300
#9D9DE7
400
#6868D9
500
#3333CC
600
#2929A3
700
#212183
800
#1A1A66
900
#16164B
950
#0E0E2F

Contrast Checker

Text on white

17.95:1

AA Pass AAA Pass

Text on black

1.17:1

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