#171c3a

Color #171c3a

A moderately saturated very dark blue.

Closest named color Charcoal #36454f · ΔE 23.87 Nearest Tailwind class slate-900 #0f172b · ΔE 4.9

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Conversions

HEX

#171c3a

RGB

rgb(23, 28, 58)

HSL

hsl(231.4, 43.2%, 15.9%)

HSV / HSB

hsv(231.4, 60.3%, 22.7%)

CMYK

cmyk(60.3%, 51.7%, 0%, 77.3%)

LAB

lab(11.4, 8.2, -20.2)

LCH

lch(11.4, 21.8, 292.09)

OKLCH

oklch(23.9%, 0.0575, 274.09)

HWB

hwb(231.4, 9%, 77.3%)

Harmony colors

Complementary

#3a3517

Analogous

#172e3a

#171c3a

#24173a

Triadic

#171c3a

#3a171c

#1c3a17

Split-complementary

#171c3a

#3a2417

#2e3a17

Tetradic

#171c3a

#35173a

#3a3517

#1c3a17

Square

#171c3a

#3a172e

#3a3517

#173a24

Shades

Color #171c3a mixed toward black.

#131730

#0f1327

#0c0e1d

#080913

#04050a

Tints

Color #171c3a mixed toward white.

#2b356d

#404ea0

#6573c2

#99a1d6

#ccd0eb

Tones

Color #171c3a mixed toward gray.

#1a1e37

#1d2034

#202231

#23242e

#26262b

Accessibility

Aa White text on this color

16.62:1

Aa Black text on this color

1.26:1

White text reads better on this background (16.62:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#191934 · ΔE 2.1

Deuteranopia

#191933 · ΔE 2.3

Tritanopia

#17302e · ΔE 22

Achromatopsia

#1e1e1e · ΔE 15.4

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

Code

CSS

background-color: #171c3a;

Tailwind (arbitrary value)

bg-[#171c3a]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#171c3a (#171c3a) is rgb(23, 28, 58) in RGB.

No, #171c3a 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.

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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 #171c3a, or check how it holds up for accessibility.

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