Color

#51fbba

#51fbba
hex#51fbba
rgbrgb(81, 251, 186)
hslhsl(157, 96%, 65%)
oklchoklch(0.885 0.167 163.4)
Closest name: Illicit Green (#56fca2)Relative luminance 0.7429

Colors that go with #51fbba

Taupe, Hot Pink and Charcoal 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 →

#fb5092

#50fb64 · #50e7fb

#ba50fb · #fbba50

Split-complementary

Open in tool →

#fb50e7 · #fb6450

#6450fb · #fb5092 · #e7fb50

Contrast

#51fbba as textRatioAAAA largeAAAFix
Aaon white
1.32:1failfailfail
  • AA: use #038754 as the text (4.57:1)
  • AAA: use #02643e as the text (7.25:1)
  • AA: or shift the background to #636363 (4.54:1)
  • AAA: or shift the background to #474747 (7.02:1)
Aaon black
15.86:1passpasspassPasses 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 #51fbba 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 #51fbba
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 #51fbba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51fbba-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