#28397e

Color #28397e

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 9.7 Nearest Tailwind class blue-900 #1c398e · ΔE 2.8

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

Conversions

HEX

#28397e

RGB

rgb(40, 57, 126)

HSL

hsl(228.1, 51.8%, 32.5%)

HSV / HSB

hsv(228.1, 68.3%, 49.4%)

CMYK

cmyk(68.3%, 54.8%, 0%, 50.6%)

LAB

lab(26.4, 17.46, -41.26)

LCH

lch(26.4, 44.8, 292.94)

OKLCH

oklch(37.2%, 0.1185, 269.42)

HWB

hwb(228.1, 15.7%, 50.6%)

Harmony colors

Complementary

#7e6d28

Analogous

#28647e

#28397e

#42287e

Triadic

#28397e

#7e2839

#397e28

Split-complementary

#28397e

#7e4228

#647e28

Tetradic

#28397e

#6d287e

#7e6d28

#397e28

Square

#28397e

#7e2864

#7e6d28

#287e42

Shades

Color #28397e mixed toward black.

#212f69

#1b2654

#141c3f

#0d132a

#070915

Tints

Color #28397e mixed toward white.

#364da9

#5168c8

#7c8ed6

#a8b4e3

#d3d9f1

Tones

Color #28397e mixed toward gray.

#2f3d77

#36426f

#3d4668

#454a61

#4c4f5a

Accessibility

Aa White text on this color

10.62:1

Aa Black text on this color

1.98:1

White text reads better on this background (10.62:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#303072 · ΔE 4.2

Deuteranopia

#2f2e6f · ΔE 4.8

Tritanopia

#296765 · ΔE 29.2

Achromatopsia

#3e3e3e · ΔE 22.7

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

Code

CSS

background-color: #28397e;

Tailwind (arbitrary value)

bg-[#28397e]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Frequently asked questions

#28397e (#28397e) is rgb(40, 57, 126) in RGB.

No, #28397e is not web-safe. The nearest web-safe colors are among its tones and shades below.

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 #28397e, or check how it holds up for accessibility.

Generate a palette → Check contrast