Color

#51a472

#51a472
hex#51a472
rgbrgb(81, 164, 114)
hslhsl(144, 34%, 48%)
oklchoklch(0.653 0.111 155.2)
Closest name: Cosmic Green (#30a877)Relative luminance 0.2952

Colors that go with #51a472

Charcoal, Blue and Copper 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 →

#a45183

#59a451 · #51a49c

#7251a4 · #a47251

Split-complementary

Open in tool →

#9c51a4 · #a45159

#5159a4 · #a45183 · #a49c51

Contrast

#51a472 as textRatioAAAA largeAAAFix
Aaon white
3.04:1failpassfail
  • AA: use #40825a as the text (4.61:1)
  • AAA: use #2f6043 as the text (7.3:1)
  • AA: or shift the background to #2b2b2b (4.65:1)
Aaon black
6.9:1passpassfail
  • AAA: use #52a774 as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51a472 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 #51a472
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 #51a472 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51a472-a2beb0-ca59d4-1f2d2b-eaf1e9?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