Color

#1bf343

#1bf343
hex#1bf343
rgbrgb(27, 243, 67)
hslhsl(131, 90%, 53%)
oklchoklch(0.839 0.263 144.5)
Closest name: Becquerel (#4bec13)Relative luminance 0.6474

Colors that go with #1bf343

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 →

#f31bcb

#60f31b · #1bf3af

#431bf3 · #f3431b

Split-complementary

Open in tool →

#af1bf3 · #f31b60

#1b60f3 · #f31bcb · #f3af1b

Contrast

#1bf343 as textRatioAAAA largeAAAFix
Aaon white
1.51:1failfailfail
  • AA: use #07881f as the text (4.61:1)
  • AAA: use #056617 as the text (7.19:1)
  • AA: or shift the background to #595959 (4.65:1)
  • AAA: or shift the background to #3d3d3d (7.21:1)
Aaon black
13.95:1passpasspassPasses 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 #1bf343 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 #1bf343
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 #1bf343 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1bf343-a2beaa-b34edf-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