Color

#403d42

#403d42
hex#403d42
rgbrgb(64, 61, 66)
hslhsl(276, 4%, 25%)
oklchoklch(0.365 0.009 312.2)
Closest name: Black Truffle (#463d3e)Relative luminance 0.0482

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#3f423d

#3e3d42 · #423d42

#42403d · #3d4240

Split-complementary

Open in tool →

#42423d · #3d423e

#423e3d · #3f423d · #3d4242

Contrast

#403d42 as textRatioAAAA largeAAAFix
Aaon white
10.69:1passpasspassPasses AAA — no fix needed.
Aaon black
1.96:1failfailfail
  • AA: use #79737d as the text (4.56:1)
  • AAA: use #9a959d as the text (7.16:1)
  • AA: or shift the background to #ababab (4.66:1)
  • AAA: or shift the background to #d1d1d1 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #403d42 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#403d42 reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #403d42
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #403d42 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/403d42-a2beb0-c859d4-1f2d2b-eaf1e9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md