Color

#3a85cf

#3a85cf
hex#3a85cf
rgbrgb(58, 133, 207)
hslhsl(210, 61%, 52%)
oklchoklch(0.605 0.135 250.8)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2218

Colors that go with #3a85cf

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 →

#cf853a

#3acfcf · #3a3acf

#cf3a85 · #85cf3a

Split-complementary

Open in tool →

#cf3a3a · #cfcf3a

#cf3acf · #cf853a · #3acf3a

Contrast

#3a85cf as textRatioAAAA largeAAAFix
Aaon white
3.86:1failpassfail
  • AA: use #2f78c1 as the text (4.59:1)
  • AAA: use #235990 as the text (7.23:1)
  • AA: or shift the background to #1a1a1a (4.51:1)
Aaon black
5.44:1passpassfail
  • AAA: use #5f9cd8 as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a85cf 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

#3a85cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a85cf
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 #3a85cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a85cf-9cabc4-df514e-1f202d-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