Color

#3f84a2

#3f84a2
hex#3f84a2
rgbrgb(63, 132, 162)
hslhsl(198, 44%, 44%)
oklchoklch(0.581 0.083 229.1)
Closest name: Ahoy! Blue (#0082a1)Relative luminance 0.2017

Colors that go with #3f84a2

Charcoal, Copper and Royal Blue 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 #3f84a2

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a25c3f

#3fa28e · #3f53a2

#a23f84 · #84a23f

Split-complementary

Open in tool →

#a23f53 · #a28e3f

#8e3fa2 · #a25c3f · #53a23f

Contrast

#3f84a2 as textRatioAAAA largeAAAFix
Aaon white
4.17:1failpassfail
  • AA: use #3c7e9a as the text (4.52:1)
  • AAA: use #2c5d72 as the text (7.2:1)
  • AA: or shift the background to #0f0f0f (4.59:1)
Aaon black
5.03:1passpassfail
  • AAA: use #569ebd as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f84a2 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

#3f84a2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f84a2
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 #3f84a2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f84a2-9cb3c4-df4e69-1f232d-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