#403f47

Color #403f47

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 6.57 Nearest Tailwind class zinc-700 #3f3f46 · ΔE 0.9

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Conversions

HEX

#403f47

RGB

rgb(64, 63, 71)

HSL

hsl(247.5, 6%, 26.3%)

HSV / HSB

hsv(247.5, 11.3%, 27.8%)

CMYK

cmyk(9.9%, 11.3%, 0%, 72.2%)

LAB

lab(27.02, 2.29, -4.71)

LCH

lch(27.02, 5.24, 295.93)

OKLCH

oklch(37.2%, 0.0136, 291.49)

HWB

hwb(247.5, 24.7%, 72.2%)

Harmony colors

Complementary

#46473f

Analogous

#3f4247

#403f47

#443f47

Triadic

#403f47

#47403f

#3f4740

Split-complementary

#403f47

#47443f

#42473f

Tetradic

#403f47

#473f46

#46473f

#3f4740

Square

#403f47

#473f42

#46473f

#3f4744

Shades

Color #403f47 mixed toward black.

#35353b

#2b2a2f

#202024

#151518

#0b0b0c

Tints

Color #403f47 mixed toward white.

#5e5c68

#7c7a89

#9d9ba7

#bebdc4

#dedee2

Tones

Color #403f47 mixed toward gray.

#414046

#424145

#424244

#434244

Accessibility

Aa White text on this color

10.4:1

Aa Black text on this color

2.02:1

White text reads better on this background (10.4:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#404045 · ΔE 2

Deuteranopia

#404045 · ΔE 2

Tritanopia

#404443 · ΔE 7.1

Achromatopsia

#404040 · ΔE 5.2

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

Code

CSS

background-color: #403f47;

Tailwind (arbitrary value)

bg-[#403f47]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#403f47 (#403f47) is rgb(64, 63, 71) in RGB.

No, #403f47 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.

Try it → Accessibility

Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

Try it → Generators

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 #403f47, or check how it holds up for accessibility.

Generate a palette → Check contrast