Color

#12de19

#12de19
hex#12de19
rgbrgb(18, 222, 25)
hslhsl(122, 85%, 47%)
oklchoklch(0.782 0.26 142.7)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5244

Colors that go with #12de19

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 →

#de12d7

#71de12 · #12de7f

#1912de · #de1912

Split-complementary

Open in tool →

#7f12de · #de1271

#1271de · #de12d7 · #de7f12

Contrast

#12de19 as textRatioAAAA largeAAAFix
Aaon white
1.83:1failfailfail
  • AA: use #0b890f as the text (4.57:1)
  • AAA: use #08680c as the text (7.01:1)
  • AA: or shift the background to #4d4d4d (4.62:1)
  • AAA: or shift the background to #303030 (7.22:1)
Aaon black
11.49:1passpasspassPasses 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 #12de19 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 #12de19
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 #12de19 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12de19-a2bea6-9e4edf-1f2d26-edf1e9?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