#171C5F

#171C5F

Color Values

HEX

#171C5F

RGB

23, 28, 95

HSL

235.8, 61.0%, 23.1%

HSV

235.8, 75.8%, 37.3%

CMYK

75.8%, 70.5%, 0.0%, 62.7%

OKLCH

0.2733 0.117 272.5

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#171C5F

#5F5A17

Analogous

#17405F

#36175F

#171C5F

Triadic

#171C5F

#5F171C

#1C5F17

Split Complementary

#171C5F

#5F3617

#405F17

Tetradic

#171C5F

#5F1740

#5F5A17

#175F36

Color Blindness Simulation

Original

#171C5F

Protanopia

#19194F

Deuteranopia

#19184B

Tritanopia

#17423F

Achromatopsia

#202020

CSS Usage

background-color: #171C5F;
color: #171C5F;
border-color: #171C5F;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F3F4FB
100
#E4E5F6
200
#C6C9F1
300
#9CA2E7
400
#676FDA
500
#323DCD
600
#2830A4
700
#202783
800
#191E67
900
#161A4B
950
#0E102F

Contrast Checker

Text on white

15.35:1

AA Pass AAA Pass

Text on black

1.37:1

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