Color

#166bb6

#166bb6
hex#166bb6
rgbrgb(22, 107, 182)
hslhsl(208, 78%, 40%)
oklchoklch(0.52 0.14 250.9)
Closest name: Brilliant Blue (#0075b3)Relative luminance 0.1406

Colors that go with #166bb6

Charcoal, Crimson and Amber 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 →

#b66116

#16b6b0 · #161cb6

#b6166b · #6bb616

Split-complementary

Open in tool →

#b6161c · #b6b016

#b016b6 · #b66116 · #1cb616

Contrast

#166bb6 as textRatioAAAA largeAAAFix
Aaon white
5.51:1passpassfail
  • AAA: use #135b9a as the text (7.02:1)
Aaon black
3.81:1failpassfail
  • AA: use #1979cc as the text (4.65:1)
  • AAA: use #459ce8 as the text (7.17:1)
  • AA: or shift the background to #ebebeb (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #166bb6 as the background.

Brands using this color

Fonts for this mood

#166bb6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #166bb6
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 #166bb6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/166bb6-9cadc4-df4e51-1f212d-e9f1f1?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