Color

#2891af

#2891af
hex#2891af
rgbrgb(40, 145, 175)
hslhsl(193, 63%, 42%)
oklchoklch(0.612 0.101 221.7)
Closest name: Blue Moon (#3992a8)Relative luminance 0.238

Colors that go with #2891af

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#af4528

#28af88 · #284eaf

#af2891 · #91af28

Split-complementary

Open in tool →

#af284e · #af8828

#8828af · #af4528 · #4eaf28

Contrast

#2891af as textRatioAAAA largeAAAFix
Aaon white
3.65:1failpassfail
  • AA: use #23809a as the text (4.54:1)
  • AAA: use #195d70 as the text (7.39:1)
  • AA: or shift the background to #1f1f1f (4.52:1)
Aaon black
5.76:1passpassfail
  • AAA: use #2ca3c3 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2891af 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

#2891af reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2891af
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 #2891af and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2891af-a2b5be-df4e75-1f242d-e9f1ef?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