Color

#288ed2

#288ed2
hex#288ed2
rgbrgb(40, 142, 210)
hslhsl(204, 68%, 49%)
oklchoklch(0.622 0.136 243.5)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2445

Colors that go with #288ed2

Charcoal, Orange Red 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 →

#d26c28

#28d2c1 · #2839d2

#d2288e · #8ed228

Split-complementary

Open in tool →

#d22839 · #d2c128

#c128d2 · #d26c28 · #39d228

Contrast

#288ed2 as textRatioAAAA largeAAAFix
Aaon white
3.57:1failpassfail
  • AA: use #227ab4 as the text (4.66:1)
  • AAA: use #1a5d89 as the text (7.07:1)
  • AA: or shift the background to #212121 (4.52:1)
Aaon black
5.89:1passpassfail
  • AAA: use #439edb as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288ed2 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

#288ed2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #288ed2
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 #288ed2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288ed2-9cafc4-df4e5a-1f222d-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