Color

#12fd58

#12fd58
hex#12fd58
rgbrgb(18, 253, 88)
hslhsl(138, 98%, 53%)
oklchoklch(0.866 0.261 146.1)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7108

Colors that go with #12fd58

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 →

#fd12b6

#41fd12 · #12fdce

#5812fd · #fd5812

Split-complementary

Open in tool →

#ce12fd · #fd1241

#1241fd · #fd12b6 · #fdce12

Contrast

#12fd58 as textRatioAAAA largeAAAFix
Aaon white
1.38:1failfailfail
  • AA: use #01882a as the text (4.61:1)
  • AAA: use #01651f as the text (7.29:1)
  • AA: or shift the background to #5e5e5e (4.7:1)
  • AAA: or shift the background to #424242 (7.28:1)
Aaon black
15.22:1passpasspassPasses 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 #12fd58 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 #12fd58
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 #12fd58 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12fd58-a2beae-be59d4-1f2d29-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