Color

#51ecb0

#51ecb0
hex#51ecb0
rgbrgb(81, 236, 176)
hslhsl(157, 80%, 62%)
oklchoklch(0.847 0.156 163.5)
Closest name: Aquamarine (#2ee8bb)Relative luminance 0.6487

Colors that go with #51ecb0

Charcoal, Taupe and Hot Pink 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 →

#ec518c

#51ec63 · #51daec

#b051ec · #ecb051

Split-complementary

Open in tool →

#ec51da · #ec6351

#6351ec · #ec518c · #daec51

Contrast

#51ecb0 as textRatioAAAA largeAAAFix
Aaon white
1.5:1failfailfail
  • AA: use #0f8558 as the text (4.65:1)
  • AAA: use #0b6543 as the text (7.1:1)
  • AA: or shift the background to #595959 (4.66:1)
  • AAA: or shift the background to #3d3d3d (7.23:1)
Aaon black
13.97:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51ecb0 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 #51ecb0
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 #51ecb0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51ecb0-a2beb7-d459c4-1f2c2d-e9f1ea?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