Color

#407d4e

#407d4e
hex#407d4e
rgbrgb(64, 125, 78)
hslhsl(134, 32%, 37%)
oklchoklch(0.536 0.097 149.6)
Closest name: Amazon (#387b54)Relative luminance 0.1631

Colors that go with #407d4e

Charcoal, Royal Blue and Medium Violet Red 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 →

#7d406e

#507d40 · #407d6c

#4e407d · #7d4e40

Split-complementary

Open in tool →

#6c407d · #7d4050

#40507d · #7d406e · #7d6c40

Contrast

#407d4e as textRatioAAAA largeAAAFix
Aaon white
4.93:1passpassfail
  • AAA: use #32623d as the text (7.12:1)
Aaon black
4.26:1failpassfail
  • AA: use #448352 as the text (4.61:1)
  • AAA: use #57a86a as the text (7.21:1)
  • AA: or shift the background to #f5f5f5 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #407d4e as the background.

Brands using this color

mcpConnect your agent — build around #407d4e
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 #407d4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/407d4e-a2beac-b559d4-1f2d29-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