Color

#51883f

#51883f
hex#51883f
rgbrgb(81, 136, 63)
hslhsl(105, 37%, 39%)
oklchoklch(0.571 0.12 138.5)
Closest name: Beanpole (#4e8747)Relative luminance 0.1972

Colors that go with #51883f

Charcoal, Royal Blue and Dark Orchid 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 →

#763f88

#76883f · #3f8851

#3f5188 · #883f51

Split-complementary

Open in tool →

#513f88 · #883f76

#3f7688 · #763f88 · #88513f

Contrast

#51883f as textRatioAAAA largeAAAFix
Aaon white
4.25:1failpassfail
  • AA: use #4d813b as the text (4.65:1)
  • AAA: use #3a622d as the text (7.08:1)
  • AA: or shift the background to #0f0f0f (4.51:1)
Aaon black
4.94:1passpassfail
  • AAA: use #64a84d as the text (7.25:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51883f 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 #51883f
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 #51883f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51883f-a6bea2-754edf-1f2d22-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