Color

#1b9866

#1b9866
hex#1b9866
rgbrgb(27, 152, 102)
hslhsl(156, 70%, 35%)
oklchoklch(0.603 0.129 160.2)
Closest name: Eucalyptus (#329760)Relative luminance 0.2365

Colors that go with #1b9866

Charcoal, Crimson and Medium Violet Red 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 →

#981b4d

#1b9827 · #1b8b98

#661b98 · #98661b

Split-complementary

Open in tool →

#981b8b · #98271b

#271b98 · #981b4d · #8b981b

Contrast

#1b9866 as textRatioAAAA largeAAAFix
Aaon white
3.67:1failpassfail
  • AA: use #18865a as the text (4.57:1)
  • AAA: use #126443 as the text (7.17:1)
  • AA: or shift the background to #1c1c1c (4.65:1)
Aaon black
5.73:1passpassfail
  • AAA: use #1fad74 as the text (7.29:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1b9866 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 #1b9866
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 #1b9866 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b9866-a2beb6-d459c6-1f2d2d-e9f1ea?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