#42404c

Color #42404c

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 7.02 Nearest Tailwind class zinc-700 #3f3f46 · ΔE 3.2

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Conversions

HEX

#42404c

RGB

rgb(66, 64, 76)

HSL

hsl(250, 8.6%, 27.5%)

HSV / HSB

hsv(250, 15.8%, 29.8%)

CMYK

cmyk(13.2%, 15.8%, 0%, 70.2%)

LAB

lab(27.7, 3.66, -6.94)

LCH

lch(27.7, 7.85, 297.81)

OKLCH

oklch(37.8%, 0.0204, 293.05)

HWB

hwb(250, 25.1%, 70.2%)

Harmony colors

Complementary

#4a4c40

Analogous

#40444c

#42404c

#48404c

Triadic

#42404c

#4c4240

#404c42

Split-complementary

#42404c

#4c4840

#444c40

Tetradic

#42404c

#4c404a

#4a4c40

#404c42

Square

#42404c

#4c4044

#4a4c40

#404c48

Shades

Color #42404c mixed toward black.

#37353f

#2c2b33

#212026

#161519

#0b0b0d

Tints

Color #42404c mixed toward white.

#5f5c6e

#7d798e

#9d9bab

#bebcc7

#dedee3

Tones

Color #42404c mixed toward gray.

#43414b

#43424a

#444349

#454448

#454547

Accessibility

Aa White text on this color

10.15:1

Aa Black text on this color

2.07:1

White text reads better on this background (10.15:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#414149 · ΔE 2.6

Deuteranopia

#414149 · ΔE 2.6

Tritanopia

#424747 · ΔE 9.2

Achromatopsia

#414141 · ΔE 7.4

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

Code

CSS

background-color: #42404c;

Tailwind (arbitrary value)

bg-[#42404c]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#42404c (#42404c) is rgb(66, 64, 76) in RGB.

No, #42404c 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 #42404c, or check how it holds up for accessibility.

Generate a palette → Check contrast