Color

#2f81bc

#2f81bc
hex#2f81bc
rgbrgb(47, 129, 188)
hslhsl(205, 60%, 46%)
oklchoklch(0.581 0.12 244)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1994

Colors that go with #2f81bc

Charcoal, Crimson and Copper 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 →

#bc6a2f

#2fbcb0 · #2f3bbc

#bc2f81 · #81bc2f

Split-complementary

Open in tool →

#bc2f3b · #bcb02f

#b02fbc · #bc6a2f · #3bbc2f

Contrast

#2f81bc as textRatioAAAA largeAAAFix
Aaon white
4.21:1failpassfail
  • AA: use #2d7bb4 as the text (4.56:1)
  • AAA: use #225d87 as the text (7.04:1)
  • AA: or shift the background to #0f0f0f (4.55:1)
Aaon black
4.99:1passpassfail
  • AAA: use #509cd3 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f81bc 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

#2f81bc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f81bc
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 #2f81bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f81bc-9cafc4-df4e58-1f212d-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