Color

#186f81

#186f81
hex#186f81
rgbrgb(24, 111, 129)
hslhsl(190, 69%, 30%)
oklchoklch(0.501 0.082 215.5)
Closest name: Blue Fjord (#007290)Relative luminance 0.1315

Colors that go with #186f81

Charcoal, Crimson and Rust 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 #186f81

Tints & shades

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

Harmonies

Complementary

Open in tool →

#812918

#18815e · #183b81

#811870 · #708118

Split-complementary

Open in tool →

#81183b · #815e18

#5e1881 · #812918 · #3b8118

Contrast

#186f81 as textRatioAAAA largeAAAFix
Aaon white
5.79:1passpassfail
  • AAA: use #156170 as the text (7.06:1)
Aaon black
3.63:1failpassfail
  • AA: use #1b7f93 as the text (4.5:1)
  • AAA: use #23a4be as the text (7.13:1)
  • AA: or shift the background to #e3e3e3 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #186f81 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#186f81 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #186f81
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 #186f81 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/186f81-a2b6be-df4e7c-1f252d-e9f1ef?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