Color

#309166

#309166
hex#309166
rgbrgb(48, 145, 102)
hslhsl(153, 50%, 38%)
oklchoklch(0.589 0.112 160.4)
Closest name: Illuminati Green (#419168)Relative luminance 0.2184

Colors that go with #309166

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 →

#91305c

#309135 · #308d91

#663091 · #916630

Split-complementary

Open in tool →

#91308d · #913530

#353091 · #91305c · #8d9130

Contrast

#309166 as textRatioAAAA largeAAAFix
Aaon white
3.91:1failpassfail
  • AA: use #2b825b as the text (4.72:1)
  • AAA: use #216346 as the text (7.15:1)
  • AA: or shift the background to #171717 (4.58:1)
Aaon black
5.37:1passpassfail
  • AAA: use #38a876 as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #309166 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 #309166
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 #309166 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/309166-a2beb5-d459cc-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