Color

#12ed33

#12ed33
hex#12ed33
rgbrgb(18, 237, 51)
hslhsl(129, 86%, 50%)
oklchoklch(0.822 0.266 143.7)
Closest name: Becquerel (#4bec13)Relative luminance 0.6094

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#ed12cc

#5fed12 · #12eda0

#3312ed · #ed3312

Split-complementary

Open in tool →

#a012ed · #ed125f

#125fed · #ed12cc · #eda012

Contrast

#12ed33 as textRatioAAAA largeAAAFix
Aaon white
1.59:1failfailfail
  • AA: use #0a8a1d as the text (4.5:1)
  • AAA: use #076415 as the text (7.39:1)
  • AA: or shift the background to #575757 (4.54:1)
  • AAA: or shift the background to #3b3b3b (7.03:1)
Aaon black
13.19:1passpasspassPasses 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 #12ed33 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 #12ed33
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #12ed33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12ed33-a2bea9-ae4edf-1f2d27-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