Color

#12de34

#12de34
hex#12de34
rgbrgb(18, 222, 52)
hslhsl(130, 85%, 47%)
oklchoklch(0.783 0.25 144)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5262

Colors that go with #12de34

Taupe, 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 →

#de12bc

#56de12 · #12de9a

#3412de · #de3412

Split-complementary

Open in tool →

#9a12de · #de1256

#1256de · #de12bc · #de9a12

Contrast

#12de34 as textRatioAAAA largeAAAFix
Aaon white
1.82:1failfailfail
  • AA: use #0b8920 as the text (4.55:1)
  • AAA: use #086317 as the text (7.48:1)
  • AA: or shift the background to #4d4d4d (4.64:1)
  • AAA: or shift the background to #303030 (7.24:1)
Aaon black
11.52:1passpasspassPasses 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 #12de34 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 #12de34
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 #12de34 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12de34-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