#171D63

#171D63

Color Values

HEX

#171D63

RGB

23, 29, 99

HSL

235.3, 62.3%, 23.9%

HSV

235.3, 76.8%, 38.8%

CMYK

76.8%, 70.7%, 0.0%, 61.2%

OKLCH

0.2794 0.1215 271.9

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#171D63

#635D17

Analogous

#174363

#371763

#171D63

Triadic

#171D63

#63171D

#1D6317

Split Complementary

#171D63

#633717

#436317

Tetradic

#171D63

#631743

#635D17

#176337

Color Blindness Simulation

Original

#171D63

Protanopia

#1A1A52

Deuteranopia

#19194E

Tritanopia

#174542

Achromatopsia

#212121

CSS Usage

background-color: #171D63;
color: #171D63;
border-color: #171D63;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F3F4FB
100
#E4E5F7
200
#C5C9F2
300
#9CA2E8
400
#666FDB
500
#303DCF
600
#2630A6
700
#1F2784
800
#181E67
900
#151A4C
950
#0D1030

Contrast Checker

Text on white

15.08:1

AA Pass AAA Pass

Text on black

1.39:1

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