#171c4b

Color #171c4b

A moderately saturated very dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 24.4 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 2.1

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#171c4b

RGB

rgb(23, 28, 75)

HSL

hsl(234.2, 53.1%, 19.2%)

HSV / HSB

hsv(234.2, 69.3%, 29.4%)

CMYK

cmyk(69.3%, 62.7%, 0%, 70.6%)

LAB

lab(12.74, 15.04, -29.96)

LCH

lch(12.74, 33.52, 296.66)

OKLCH

oklch(25.4%, 0.0863, 273.92)

HWB

hwb(234.2, 9%, 70.6%)

Harmony colors

Complementary

#4b4617

Analogous

#17364b

#171c4b

#2c174b

Triadic

#171c4b

#4b171c

#1c4b17

Split-complementary

#171c4b

#4b2c17

#364b17

Tetradic

#171c4b

#46174b

#4b4617

#1c4b17

Square

#171c4b

#4b1736

#4b4617

#174b2c

Shades

Color #171c4b mixed toward black.

#13173e

#0f1332

#0b0e25

#080919

#04050c

Tints

Color #171c4b mixed toward white.

#273080

#3743b4

#616ccf

#969ddf

#caceef

Tones

Color #171c4b mixed toward gray.

#1b1f47

#202342

#24263e

#282a3a

#2d2d35

Accessibility

Aa White text on this color

16.1:1

Aa Black text on this color

1.3:1

White text reads better on this background (16.1:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#191943 · ΔE 2

Deuteranopia

#191941 · ΔE 2.5

Tritanopia

#173c3a · ΔE 25.9

Achromatopsia

#212121 · ΔE 20

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #171c4b;

Tailwind (arbitrary value)

bg-[#171c4b]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#171c4b (#171c4b) is rgb(23, 28, 75) in RGB.

No, #171c4b is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

Try it → Accessibility

Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

Try it → Generators

Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

Try it →

Build something with this color

Generate a full palette from #171c4b, or check how it holds up for accessibility.

Generate a palette → Check contrast