Color

#287ba4

#287ba4
hex#287ba4
rgbrgb(40, 123, 164)
hslhsl(200, 61%, 40%)
oklchoklch(0.552 0.1 234.6)
Closest name: Bleu Ciel (#007ba1)Relative luminance 0.173

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a45128

#28a48f · #283da4

#a4287b · #7ba428

Split-complementary

Open in tool →

#a4283d · #a48f28

#8f28a4 · #a45128 · #3da428

Contrast

#287ba4 as textRatioAAAA largeAAAFix
Aaon white
4.71:1passpassfail
  • AAA: use #1e5c7b as the text (7.31:1)
Aaon black
4.46:1failpassfail
  • AA: use #297ea8 as the text (4.64:1)
  • AAA: use #3ea0d0 as the text (7.14:1)
  • AA: or shift the background to #fafafa (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #287ba4 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

#287ba4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #287ba4
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 #287ba4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287ba4-9cb2c4-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