Color

#2788dd

#2788dd
hex#2788dd
rgbrgb(39, 136, 221)
hslhsl(208, 73%, 51%)
oklchoklch(0.615 0.155 249.9)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2326

Colors that go with #2788dd

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 →

#dd7c27

#27ddd7 · #272ddd

#dd2788 · #88dd27

Split-complementary

Open in tool →

#dd272d · #ddd727

#d727dd · #dd7c27 · #2ddd27

Contrast

#2788dd as textRatioAAAA largeAAAFix
Aaon white
3.72:1failpassfail
  • AA: use #1f78c7 as the text (4.6:1)
  • AAA: use #175b96 as the text (7.06:1)
  • AA: or shift the background to #1c1c1c (4.59:1)
Aaon black
5.65:1passpassfail
  • AAA: use #4a9ce3 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2788dd as the background.

Brands using this color

Fonts for this mood

#2788dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2788dd
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 #2788dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2788dd-9cadc4-df4e51-1f212d-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