Color

#12fd49

#12fd49
hex#12fd49
rgbrgb(18, 253, 73)
hslhsl(134, 98%, 53%)
oklchoklch(0.865 0.27 144.9)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7086

Colors that go with #12fd49

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 →

#fd12c6

#50fd12 · #12fdbe

#4912fd · #fd4912

Split-complementary

Open in tool →

#be12fd · #fd1250

#1250fd · #fd12c6 · #fdbe12

Contrast

#12fd49 as textRatioAAAA largeAAAFix
Aaon white
1.38:1failfailfail
  • AA: use #018821 as the text (4.62:1)
  • AAA: use #016518 as the text (7.3:1)
  • AA: or shift the background to #5e5e5e (4.68:1)
  • AAA: or shift the background to #424242 (7.26:1)
Aaon black
15.17:1passpasspassPasses 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 #12fd49 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 #12fd49
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 #12fd49 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12fd49-a2beac-b559d4-1f2d29-ebf1e9?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