Color

#5cf551

#5cf551
hex#5cf551
rgbrgb(92, 245, 81)
hslhsl(116, 89%, 64%)
oklchoklch(0.857 0.241 142.2)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6817

Colors that go with #5cf551

Deep Sky Blue, 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 →

#ea51f5

#aef551 · #51f598

#515cf5 · #f5515c

Split-complementary

Open in tool →

#9851f5 · #f551ae

#51aef5 · #ea51f5 · #f59851

Contrast

#5cf551 as textRatioAAAA largeAAAFix
Aaon white
1.43:1failfailfail
  • AA: use #108708 as the text (4.68:1)
  • AAA: use #0c6506 as the text (7.29:1)
  • AA: or shift the background to #5e5e5e (4.52:1)
  • AAA: or shift the background to #424242 (7:1)
Aaon black
14.63:1passpasspassPasses 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 #5cf551 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 #5cf551
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 #5cf551 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5cf551-a2bea3-8f4edf-1f2d24-eef1e9?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