#17428b

Color #17428b

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 12.36 Nearest Tailwind class blue-900 #1c398e · ΔE 3.7

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Conversions

HEX

#17428b

RGB

rgb(23, 66, 139)

HSL

hsl(217.8, 71.6%, 31.8%)

HSV / HSB

hsv(217.8, 83.5%, 54.5%)

CMYK

cmyk(83.5%, 52.5%, 0%, 45.5%)

LAB

lab(29.27, 14.08, -44.75)

LCH

lch(29.27, 46.91, 287.47)

OKLCH

oklch(39.5%, 0.1307, 260.4)

HWB

hwb(217.8, 9%, 45.5%)

Harmony colors

Complementary

#8b6017

Analogous

#177c8b

#17428b

#26178b

Triadic

#17428b

#8b1742

#428b17

Split-complementary

#17428b

#8b2617

#7c8b17

Tetradic

#17428b

#60178b

#8b6017

#428b17

Square

#17428b

#8b177c

#8b6017

#178b26

Shades

Color #17428b mixed toward black.

#133774

#0f2c5d

#0c2146

#08162e

#040b17

Tints

Color #17428b mixed toward white.

#1f5abd

#3875de

#6a98e6

#9cbaef

#cdddf7

Tones

Color #17428b mixed toward gray.

#214581

#2a4778

#344a6e

#3e4c64

#474f5b

Accessibility

Aa White text on this color

9.6:1

Aa Black text on this color

2.19:1

White text reads better on this background (9.6:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2f2f7e · ΔE 8.4

Deuteranopia

#2d297b · ΔE 9.9

Tritanopia

#1b7370 · ΔE 30.7

Achromatopsia

#454545 · ΔE 23

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

Code

CSS

background-color: #17428b;

Tailwind (arbitrary value)

bg-[#17428b]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#17428b (#17428b) is rgb(23, 66, 139) in RGB.

No, #17428b 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 #17428b, or check how it holds up for accessibility.

Generate a palette → Check contrast