Color

#27fc4a

#27fc4a
hex#27fc4a
rgbrgb(39, 252, 74)
hslhsl(130, 97%, 57%)
oklchoklch(0.864 0.267 144.5)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7055

Colors that go with #27fc4a

Violet, Hot Pink and Plum 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 →

#fc27d8

#6efc27 · #27fcb5

#4a27fc · #fc4a27

Split-complementary

Open in tool →

#b527fc · #fc276e

#276efc · #fc27d8 · #fcb527

Contrast

#27fc4a as textRatioAAAA largeAAAFix
Aaon white
1.39:1failfailfail
  • AA: use #028818 as the text (4.63:1)
  • AAA: use #026412 as the text (7.41:1)
  • AA: or shift the background to #5e5e5e (4.67:1)
  • AAA: or shift the background to #424242 (7.23:1)
Aaon black
15.11:1passpasspassPasses 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 #27fc4a 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 #27fc4a
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 #27fc4a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/27fc4a-a2beaa-b14edf-1f2d28-ecf1e9?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