Color

#51a45c

#51a45c
hex#51a45c
rgbrgb(81, 164, 92)
hslhsl(128, 34%, 48%)
oklchoklch(0.648 0.133 146.6)
Closest name: Golf Course (#5a9e4b)Relative luminance 0.2907

Colors that go with #51a45c

Charcoal, Blue and Crimson 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 →

#a45199

#6fa451 · #51a485

#5c51a4 · #a45c51

Split-complementary

Open in tool →

#8551a4 · #a4516f

#516fa4 · #a45199 · #a48551

Contrast

#51a45c as textRatioAAAA largeAAAFix
Aaon white
3.08:1failpassfail
  • AA: use #408249 as the text (4.66:1)
  • AAA: use #316338 as the text (7.06:1)
  • AA: or shift the background to #2b2b2b (4.59:1)
Aaon black
6.81:1passpassfail
  • AAA: use #52a75e as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51a45c 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 #51a45c
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 #51a45c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51a45c-a2bea9-ac4edf-1f2d27-ecf1e9?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