Color

#288bd2

#288bd2
hex#288bd2
rgbrgb(40, 139, 210)
hslhsl(205, 68%, 49%)
oklchoklch(0.615 0.139 245.2)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2357

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d26f28

#28d2c4 · #2836d2

#d2288b · #8bd228

Split-complementary

Open in tool →

#d22836 · #d2c428

#c428d2 · #d26f28 · #36d228

Contrast

#288bd2 as textRatioAAAA largeAAAFix
Aaon white
3.68:1failpassfail
  • AA: use #237ab8 as the text (4.62:1)
  • AAA: use #1a5b89 as the text (7.24:1)
  • AA: or shift the background to #1c1c1c (4.64:1)
Aaon black
5.71:1passpassfail
  • AAA: use #439cdb as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288bd2 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

#288bd2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #288bd2
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #288bd2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288bd2-9cafc4-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