Color

#407d52

#407d52
hex#407d52
rgbrgb(64, 125, 82)
hslhsl(138, 32%, 37%)
oklchoklch(0.537 0.093 151.7)
Closest name: Amazon (#387b54)Relative luminance 0.1637

Colors that go with #407d52

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 →

#7d406a

#4c7d40 · #407d70

#52407d · #7d5240

Split-complementary

Open in tool →

#70407d · #7d404c

#404c7d · #7d406a · #7d7040

Contrast

#407d52 as textRatioAAAA largeAAAFix
Aaon white
4.91:1passpassfail
  • AAA: use #326240 as the text (7.1:1)
Aaon black
4.27:1failpassfail
  • AA: use #448357 as the text (4.63:1)
  • AAA: use #57a86f as the text (7.24:1)
  • AA: or shift the background to #f5f5f5 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #407d52 as the background.

Brands using this color

mcpConnect your agent — build around #407d52
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 #407d52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/407d52-a2beae-be59d4-1f2d29-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