Color

#18909a

#18909a
hex#18909a
rgbrgb(24, 144, 154)
hslhsl(185, 73%, 35%)
oklchoklch(0.598 0.097 203.9)
Closest name: darkcyan (#008b8b)Relative luminance 0.2247

Colors that go with #18909a

Charcoal, Copper and Crimson 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.

Real palettes that use #18909a

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#9a2318

#189a64 · #184e9a

#9a1890 · #909a18

Split-complementary

Open in tool →

#9a184e · #9a6418

#64189a · #9a2318 · #4e9a18

Contrast

#18909a as textRatioAAAA largeAAAFix
Aaon white
3.82:1failpassfail
  • AA: use #16838d as the text (4.5:1)
  • AAA: use #11626a as the text (7.05:1)
  • AA: or shift the background to #1a1a1a (4.55:1)
Aaon black
5.49:1passpassfail
  • AAA: use #1ca8b5 as the text (7.32:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18909a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#18909a reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18909a
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 #18909a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18909a-a2b8be-df4e88-1f262d-e9f1ee?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