Color

#1bbb4b

#1bbb4b
hex#1bbb4b
rgbrgb(27, 187, 75)
hslhsl(138, 75%, 42%)
oklchoklch(0.693 0.197 147.3)
Closest name: Intoxicate (#11bb55)Relative luminance 0.3628

Colors that go with #1bbb4b

Charcoal, Royal Blue and Taupe 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 →

#bb1b8b

#3bbb1b · #1bbb9b

#4b1bbb · #bb4b1b

Split-complementary

Open in tool →

#9b1bbb · #bb1b3b

#1b3bbb · #bb1b8b · #bb9b1b

Contrast

#1bbb4b as textRatioAAAA largeAAAFix
Aaon white
2.54:1failfailfail
  • AA: use #138636 as the text (4.68:1)
  • AAA: use #0f6729 as the text (7.02:1)
  • AA: or shift the background to #383838 (4.61:1)
  • AAA: or shift the background to #171717 (7.05:1)
Aaon black
8.26:1passpasspassPasses 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 #1bbb4b as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #1bbb4b
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 #1bbb4b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1bbb4b-a2beae-be59d4-1f2d29-ebf1e9?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