Color

#288ee2

#288ee2
hex#288ee2
rgbrgb(40, 142, 226)
hslhsl(207, 76%, 52%)
oklchoklch(0.631 0.155 248.6)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2529

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e27b28

#28e2d8 · #2831e2

#e2288e · #8ee228

Split-complementary

Open in tool →

#e22831 · #e2d828

#d828e2 · #e27b28 · #31e228

Contrast

#288ee2 as textRatioAAAA largeAAAFix
Aaon white
3.47:1failpassfail
  • AA: use #1b79c5 as the text (4.58:1)
  • AAA: use #145b94 as the text (7.11:1)
  • AA: or shift the background to #212121 (4.64:1)
Aaon black
6.06:1passpassfail
  • AAA: use #439ce5 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 #288ee2 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

#288ee2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #288ee2
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 #288ee2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288ee2-9cadc4-df4e53-1f212d-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