Color

#2866eb

#2866eb
hex#2866eb
rgbrgb(40, 102, 235)
hslhsl(221, 83%, 54%)
oklchoklch(0.553 0.211 262.7)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1595

Colors that go with #2866eb

Charcoal, Crimson 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 →

#ebad28

#28c7eb · #4c28eb

#eb2866 · #66eb28

Split-complementary

Open in tool →

#eb4c28 · #c7eb28

#eb28c7 · #ebad28 · #28eb4c

Contrast

#2866eb as textRatioAAAA largeAAAFix
Aaon white
5.01:1passpassfail
Aaon black
4.19:1failpassfail
  • AA: use #326dec as the text (4.53:1)
  • AAA: use #6a95f1 as the text (7.18:1)
  • AA: or shift the background to #f5f5f5 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2866eb as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2866eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2866eb
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 #2866eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2866eb-9ca4c4-df6b4e-211f2d-e9eff1?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