#18397d

Color #18397d

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 12.5 Nearest Tailwind class blue-900 #1c398e · ΔE 2.9

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Conversions

HEX

#18397d

RGB

rgb(24, 57, 125)

HSL

hsl(220.4, 67.8%, 29.2%)

HSV / HSB

hsv(220.4, 80.8%, 49%)

CMYK

cmyk(80.8%, 54.4%, 0%, 51%)

LAB

lab(25.56, 14.71, -42.01)

LCH

lch(25.56, 44.51, 289.3)

OKLCH

oklch(36.3%, 0.122, 262.51)

HWB

hwb(220.4, 9.4%, 51%)

Harmony colors

Complementary

#7d5c18

Analogous

#186b7d

#18397d

#29187d

Triadic

#18397d

#7d1839

#397d18

Split-complementary

#18397d

#7d2918

#6b7d18

Tetradic

#18397d

#5c187d

#7d5c18

#397d18

Square

#18397d

#7d186b

#7d5c18

#187d29

Shades

Color #18397d mixed toward black.

#142f68

#102653

#0c1c3e

#08132a

#040915

Tints

Color #18397d mixed toward white.

#2250af

#356ad8

#6890e2

#9ab5ec

#cddaf5

Tones

Color #18397d mixed toward gray.

#203c75

#293f6c

#314264

#3a455b

#424853

Accessibility

Aa White text on this color

10.94:1

Aa Black text on this color

1.92:1

White text reads better on this background (10.94:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2a2a71 · ΔE 6.8

Deuteranopia

#28256e · ΔE 8.1

Tritanopia

#1b6664 · ΔE 29.2

Achromatopsia

#3d3d3d · ΔE 22.5

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

Code

CSS

background-color: #18397d;

Tailwind (arbitrary value)

bg-[#18397d]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#18397d (#18397d) is rgb(24, 57, 125) in RGB.

No, #18397d 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 #18397d, or check how it holds up for accessibility.

Generate a palette → Check contrast