Color

#3b86bf

#3b86bf
hex#3b86bf
rgbrgb(59, 134, 191)
hslhsl(206, 53%, 49%)
oklchoklch(0.599 0.114 244.5)
Closest name: steelblue (#4682b4)Relative luminance 0.2174

Colors that go with #3b86bf

Charcoal, Copper 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 →

#bf743b

#3bbfb6 · #3b44bf

#bf3b86 · #86bf3b

Split-complementary

Open in tool →

#bf3b44 · #bfb63b

#b63bbf · #bf743b · #44bf3b

Contrast

#3b86bf as textRatioAAAA largeAAAFix
Aaon white
3.93:1failpassfail
  • AA: use #367bb0 as the text (4.55:1)
  • AAA: use #295d85 as the text (7:1)
  • AA: or shift the background to #171717 (4.57:1)
Aaon black
5.35:1passpassfail
  • AAA: use #5b9bcd as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b86bf 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

#3b86bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b86bf
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 #3b86bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b86bf-9caec4-df4e56-1f212d-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