#40403c

Color #40403c

A nearly neutral, gray-leaning dark yellow.

Closest named color Charcoal #36454f · ΔE 10.77 Nearest Tailwind class stone-700 #44403b · ΔE 2.5

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

Conversions

HEX

#40403c

RGB

rgb(64, 64, 60)

HSL

hsl(60, 3.2%, 24.3%)

HSV / HSB

hsv(60, 6.3%, 25.1%)

CMYK

cmyk(0%, 0%, 6.2%, 74.9%)

LAB

lab(26.97, -0.87, 2.45)

LCH

lch(26.97, 2.6, 109.55)

OKLCH

oklch(37%, 0.0067, 106.53)

HWB

hwb(60, 23.5%, 74.9%)

Harmony colors

Complementary

#3c3c40

Analogous

#403e3c

#40403c

#3e403c

Triadic

#40403c

#3c4040

#403c40

Split-complementary

#40403c

#3c3e40

#3e3c40

Tetradic

#40403c

#3c403c

#3c3c40

#403c40

Square

#40403c

#3c403e

#3c3c40

#403c3e

Shades

Color #40403c mixed toward black.

#353532

#2b2b28

#20201e

#151514

#0b0b0a

Tints

Color #40403c mixed toward white.

#61615b

#82827a

#a2a29b

#c1c1bd

#e0e0de

Tones

Color #40403c mixed toward gray.

#40403c

#3f3f3d

#3e3e3e

Accessibility

Aa White text on this color

10.41:1

Aa Black text on this color

2.02:1

White text reads better on this background (10.41:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#40403d · ΔE 0.6

Deuteranopia

#40403d · ΔE 0.6

Tritanopia

#403e3e · ΔE 3.3

Achromatopsia

#404040 · ΔE 2.6

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

Code

CSS

background-color: #40403c;

Tailwind (arbitrary value)

bg-[#40403c]

Related colors

Ivory #fffff0

Beige #f5f5dc

Light Goldenrod Yellow #fafad2

Light Yellow #ffffe0

Olive #808000

Yellow #ffff00

Frequently asked questions

#40403c (#40403c) is rgb(64, 64, 60) in RGB.

No, #40403c 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.

Try it →

Build something with this color

Generate a full palette from #40403c, or check how it holds up for accessibility.

Generate a palette → Check contrast