Color

#406d4d

#406d4d
hex#406d4d
rgbrgb(64, 109, 77)
hslhsl(137, 26%, 34%)
oklchoklch(0.493 0.072 152.3)
Closest name: Forest Serenade (#336644)Relative luminance 0.1256

Colors that go with #406d4d

Charcoal, Medium Violet Red and Champagne lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6d4060

#4a6d40 · #406d63

#4d406d · #6d4d40

Split-complementary

Open in tool →

#63406d · #6d404a

#404a6d · #6d4060 · #6d6340

Contrast

#406d4d as textRatioAAAA largeAAAFix
Aaon white
5.98:1passpassfail
  • AAA: use #396044 as the text (7.17:1)
Aaon black
3.51:1failpassfail
  • AA: use #4b815b as the text (4.59:1)
  • AAA: use #62a374 as the text (7.01:1)
  • AA: or shift the background to #e0e0e0 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #406d4d as the background.

Brands using this color

mcpConnect your agent — build around #406d4d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

analyze #406d4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/406d4d-a2bead-bb59d4-1f2d29-ebf1e9?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