Color

#9ced21

#9ced21
hex#9ced21
rgbrgb(156, 237, 33)
hslhsl(84, 85%, 53%)
oklchoklch(0.861 0.226 130.6)
Closest name: Acid Green (#8ffe09)Relative luminance 0.6775

Colors that go with #9ced21

Violet, Deep Sky Blue and Charcoal 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 →

#7321ed

#edd921 · #36ed21

#219ced · #ed219c

Split-complementary

Open in tool →

#2136ed · #d921ed

#21edd9 · #7321ed · #ed2136

Contrast

#9ced21 as textRatioAAAA largeAAAFix
Aaon white
1.44:1failfailfail
  • AA: use #517f0a as the text (4.78:1)
  • AAA: use #3f6308 as the text (7:1)
  • AA: or shift the background to #5c5c5c (4.63:1)
  • AAA: or shift the background to #404040 (7.18:1)
Aaon black
14.55:1passpasspassPasses 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 #9ced21 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 #9ced21
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 #9ced21 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/9ced21-afbea2-4e5adf-222d1f-f1f0e9?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