Color

#3986ac

#3986ac
hex#3986ac
rgbrgb(57, 134, 172)
hslhsl(200, 50%, 45%)
oklchoklch(0.588 0.095 233.1)
Closest name: steelblue (#4682b4)Relative luminance 0.209

Colors that go with #3986ac

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 #3986ac

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ac6039

#39ac99 · #394cac

#ac3986 · #86ac39

Split-complementary

Open in tool →

#ac394d · #ac9939

#9939ac · #ac6039 · #4dac39

Contrast

#3986ac as textRatioAAAA largeAAAFix
Aaon white
4.05:1failpassfail
  • AA: use #367da1 as the text (4.56:1)
  • AAA: use #285c77 as the text (7.27:1)
  • AA: or shift the background to #141414 (4.54:1)
Aaon black
5.18:1passpassfail
  • AAA: use #539fc6 as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3986ac 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

#3986ac reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3986ac
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 #3986ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3986ac-9cb2c4-df4e64-1f232d-e9f1f0?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