Color

#0ef121

#0ef121
hex#0ef121
rgbrgb(14, 241, 33)
hslhsl(125, 89%, 50%)
oklchoklch(0.831 0.276 143)
Closest name: Becquerel (#4bec13)Relative luminance 0.6311

Colors that go with #0ef121

Violet, Deep Sky Blue 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 →

#f10ede

#6df10e · #0ef192

#210ef1 · #f1210e

Split-complementary

Open in tool →

#920ef1 · #f10e6d

#0e6df1 · #f10ede · #f1920e

Contrast

#0ef121 as textRatioAAAA largeAAAFix
Aaon white
1.54:1failfailfail
  • AA: use #088712 as the text (4.68:1)
  • AAA: use #06650e as the text (7.3:1)
  • AA: or shift the background to #595959 (4.54:1)
  • AAA: or shift the background to #3d3d3d (7.05:1)
Aaon black
13.62:1passpasspassPasses 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 #0ef121 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 #0ef121
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 #0ef121 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0ef121-a2bea7-a54edf-1f2d26-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