Color

#1bf40b

#1bf40b
hex#1bf40b
rgbrgb(27, 244, 11)
hslhsl(116, 91%, 50%)
oklchoklch(0.839 0.282 142.3)
Closest name: Becquerel (#4bec13)Relative luminance 0.6496

Colors that go with #1bf40b

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 →

#e40bf4

#8ff40b · #0bf470

#0b1bf4 · #f40b1b

Split-complementary

Open in tool →

#700bf4 · #f40b8f

#0b8ff4 · #e40bf4 · #f4700b

Contrast

#1bf40b as textRatioAAAA largeAAAFix
Aaon white
1.5:1failfailfail
  • AA: use #0f8806 as the text (4.62:1)
  • AAA: use #0b6605 as the text (7.2:1)
  • AA: or shift the background to #595959 (4.67:1)
  • AAA: or shift the background to #3d3d3d (7.24:1)
Aaon black
13.99:1passpasspassPasses 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 #1bf40b 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 #1bf40b
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 #1bf40b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1bf40b-a2bea3-8f4edf-1f2d24-eef1e9?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