Color

#51f0ab

#51f0ab
hex#51f0ab
rgbrgb(81, 240, 171)
hslhsl(154, 84%, 63%)
oklchoklch(0.855 0.165 160.7)
Closest name: Hyperpop Green (#17f9a6)Relative luminance 0.6701

Colors that go with #51f0ab

Taupe, Violet 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 →

#f05196

#51f05c · #51e5f0

#ab51f0 · #f0ab51

Split-complementary

Open in tool →

#f051e5 · #f05c51

#5c51f0 · #f05196 · #e5f051

Contrast

#51f0ab as textRatioAAAA largeAAAFix
Aaon white
1.46:1failfailfail
  • AA: use #0c8852 as the text (4.51:1)
  • AAA: use #09633c as the text (7.34:1)
  • AA: or shift the background to #5c5c5c (4.59:1)
  • AAA: or shift the background to #404040 (7.11:1)
Aaon black
14.4:1passpasspassPasses 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 #51f0ab as the background.

Brands using this color

mcpConnect your agent — build around #51f0ab
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 #51f0ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51f0ab-a2beb5-d459ca-1f2d2d-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