#172c3f

Color #172c3f

A moderately saturated very dark blue.

Closest named color Charcoal #36454f · ΔE 13.12 Nearest Tailwind class gray-800 #1e2939 · ΔE 3.2

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

Conversions

HEX

#172c3f

RGB

rgb(23, 44, 63)

HSL

hsl(208.5, 46.5%, 16.9%)

HSV / HSB

hsv(208.5, 63.5%, 24.7%)

CMYK

cmyk(63.5%, 30.2%, 0%, 75.3%)

LAB

lab(17.19, -1.63, -14.59)

LCH

lch(17.19, 14.68, 263.63)

OKLCH

oklch(28.5%, 0.0443, 247.31)

HWB

hwb(208.5, 9%, 75.3%)

Harmony colors

Complementary

#3f2a17

Analogous

#173f3e

#172c3f

#17183f

Triadic

#172c3f

#3f172c

#2c3f17

Split-complementary

#172c3f

#3f1718

#3f3e17

Tetradic

#172c3f

#2a173f

#3f2a17

#2c3f17

Square

#172c3f

#3e173f

#3f2a17

#183f17

Shades

Color #172c3f mixed toward black.

#132535

#0f1d2a

#0c1620

#080f15

#04070b

Tints

Color #172c3f mixed toward white.

#2a5073

#3d74a7

#6498c6

#98bad9

#cbddec

Tones

Color #172c3f mixed toward gray.

#1a2c3c

#1e2c38

#212c35

#242b32

#282b2e

Accessibility

Aa White text on this color

14.3:1

Aa Black text on this color

1.47:1

White text reads better on this background (14.3:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#22223b · ΔE 10.8

Deuteranopia

#201f3a · ΔE 11.7

Tritanopia

#183837 · ΔE 14.1

Achromatopsia

#2a2a2a · ΔE 11.1

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

Code

CSS

background-color: #172c3f;

Tailwind (arbitrary value)

bg-[#172c3f]

Related colors

Alice Blue #f0f8ff

Dodger Blue #1e90ff

Steel Blue #4682b4

Light Slate Gray #778899

Slate Gray #708090

Charcoal #36454f

Frequently asked questions

#172c3f (#172c3f) is rgb(23, 44, 63) in RGB.

No, #172c3f 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.

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Palette Generator

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

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Build something with this color

Generate a full palette from #172c3f, or check how it holds up for accessibility.

Generate a palette → Check contrast