#171F9F

#171F9F

Color Values

HEX

#171F9F

RGB

23, 31, 159

HSL

236.5, 74.7%, 35.7%

HSV

236.5, 85.5%, 62.4%

CMYK

85.5%, 80.5%, 0.0%, 37.6%

OKLCH

0.3512 0.1973 268.3

Properties

Cool Dark Nearest: darkblue

Color Harmonies

Complementary

#171F9F

#9F9717

Analogous

#17639F

#53179F

#171F9F

Triadic

#171F9F

#9F171F

#1F9F17

Split Complementary

#171F9F

#9F5317

#639F17

Tetradic

#171F9F

#9F1763

#9F9717

#179F53

Color Blindness Simulation

Original

#171F9F

Protanopia

#1A1B80

Deuteranopia

#1A1979

Tritanopia

#176862

Achromatopsia

#272727

CSS Usage

background-color: #171F9F;
color: #171F9F;
border-color: #171F9F;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F2F3FC
100
#E2E3F8
200
#C1C4F6
300
#9499F0
400
#5A62E7
500
#202BDF
600
#1A23B2
700
#151C8F
800
#10166F
900
#101451
950
#0A0C33

Contrast Checker

Text on white

12.12:1

AA Pass AAA Pass

Text on black

1.73:1

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