Color

#51e6bc

#51e6bc
hex#51e6bc
rgbrgb(81, 230, 188)
hslhsl(163, 75%, 61%)
oklchoklch(0.835 0.14 170.6)
Closest name: Aphrodite Aqua (#45e9c1)Relative luminance 0.6197

Colors that go with #51e6bc

Charcoal, Crimson and Deep Sky 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 →

#e6517b

#51e671 · #51c6e6

#bc51e6 · #e6bc51

Split-complementary

Open in tool →

#e651c6 · #e67151

#7151e6 · #e6517b · #c6e651

Contrast

#51e6bc as textRatioAAAA largeAAAFix
Aaon white
1.57:1failfailfail
  • AA: use #138665 as the text (4.54:1)
  • AAA: use #0e624a as the text (7.33:1)
  • AA: or shift the background to #575757 (4.61:1)
  • AAA: or shift the background to #3b3b3b (7.15:1)
Aaon black
13.39:1passpasspassPasses 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 #51e6bc 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 #51e6bc
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 #51e6bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51e6bc-a2beb9-d459b7-1f2b2d-e9f1eb?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