Color

#288cbd

#288cbd
hex#288cbd
rgbrgb(40, 140, 189)
hslhsl(200, 65%, 45%)
oklchoklch(0.606 0.115 235.2)
Closest name: steelblue (#4682b4)Relative luminance 0.2288

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bd5a28

#28bda4 · #2841bd

#bd288c · #8cbd28

Split-complementary

Open in tool →

#bd2841 · #bda428

#a428bd · #bd5a28 · #41bd28

Contrast

#288cbd as textRatioAAAA largeAAAFix
Aaon white
3.77:1failpassfail
  • AA: use #247ca8 as the text (4.64:1)
  • AAA: use #1b5d7e as the text (7.21:1)
  • AA: or shift the background to #1c1c1c (4.53:1)
Aaon black
5.58:1passpassfail
  • AAA: use #359fd4 as the text (7.06:1)

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

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

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

tool url/palettes/new/288cbd-9cb2c4-df4e64-1f232d-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