Color

#51783f

#51783f
hex#51783f
rgbrgb(81, 120, 63)
hslhsl(101, 31%, 36%)
oklchoklch(0.529 0.095 136.5)
Closest name: Mana Tree (#4f7942)Relative luminance 0.1554

Colors that go with #51783f

Charcoal, Dark Orchid and Blue 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 →

#663f78

#6e783f · #3f784a

#3f5178 · #783f51

Split-complementary

Open in tool →

#4a3f78 · #783f6e

#3f6e78 · #663f78 · #784a3f

Contrast

#51783f as textRatioAAAA largeAAAFix
Aaon white
5.11:1passpassfail
  • AAA: use #426133 as the text (7.02:1)
Aaon black
4.11:1failpassfail
  • AA: use #567f43 as the text (4.51:1)
  • AAA: use #6fa456 as the text (7.12:1)
  • AA: or shift the background to #f2f2f2 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51783f as the background.

Brands using this color

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

mcpConnect your agent — build around #51783f
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 #51783f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51783f-a7bea2-6b4edf-1f2d21-eff1e9?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