Color

#51eb05

#51eb05
hex#51eb05
rgbrgb(81, 235, 5)
hslhsl(100, 96%, 47%)
oklchoklch(0.825 0.262 139.6)
Closest name: Becquerel (#4bec13)Relative luminance 0.6118

Colors that go with #51eb05

Deep Sky Blue, Violet 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 →

#9e05eb

#c5eb05 · #05eb2b

#0551eb · #eb0551

Split-complementary

Open in tool →

#2b05eb · #eb05c5

#05c5eb · #9e05eb · #eb2b05

Contrast

#51eb05 as textRatioAAAA largeAAAFix
Aaon white
1.59:1failfailfail
  • AA: use #2f8703 as the text (4.58:1)
  • AAA: use #236402 as the text (7.25:1)
  • AA: or shift the background to #575757 (4.55:1)
  • AAA: or shift the background to #3b3b3b (7.06:1)
Aaon black
13.24:1passpasspassPasses 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 #51eb05 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 #51eb05
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 #51eb05 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51eb05-a8bea2-694edf-1f2d21-f0f1e9?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