#403688

Color #403688

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 4.09 Nearest Tailwind class indigo-900 #312c85 · ΔE 3.3

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Conversions

HEX

#403688

RGB

rgb(64, 54, 136)

HSL

hsl(247.3, 43.2%, 37.3%)

HSV / HSB

hsv(247.3, 60.3%, 53.3%)

CMYK

cmyk(52.9%, 60.3%, 0%, 46.7%)

LAB

lab(28.13, 27.77, -44.62)

LCH

lch(28.13, 52.56, 301.9)

OKLCH

oklch(39.2%, 0.1316, 284.07)

HWB

hwb(247.3, 21.2%, 46.7%)

Harmony colors

Complementary

#7e8836

Analogous

#365588

#403688

#693688

Triadic

#403688

#884036

#368840

Split-complementary

#403688

#886936

#558836

Tetradic

#403688

#88367e

#7e8836

#368840

Square

#403688

#883655

#7e8836

#368869

Shades

Color #403688 mixed toward black.

#352d72

#2b245b

#201b44

#15122d

#0b0917

Tints

Color #403688 mixed toward white.

#5245ae

#7266c2

#958dd2

#b8b3e1

#dcd9f0

Tones

Color #403688 mixed toward gray.

#453d81

#4a447b

#504b74

#55516d

#5a5866

Accessibility

Aa White text on this color

9.99:1

Aa Black text on this color

2.1:1

White text reads better on this background (9.99:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3c3c7a · ΔE 4

Deuteranopia

#3c3d77 · ΔE 4.8

Tritanopia

#406e6b · ΔE 30.6

Achromatopsia

#424242 · ΔE 24.4

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

Code

CSS

background-color: #403688;

Tailwind (arbitrary value)

bg-[#403688]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#403688 (#403688) is rgb(64, 54, 136) in RGB.

No, #403688 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 #403688, or check how it holds up for accessibility.

Generate a palette → Check contrast