Color

#287ab8

#287ab8
hex#287ab8
rgbrgb(40, 122, 184)
hslhsl(206, 64%, 44%)
oklchoklch(0.561 0.123 245.8)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1783

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b86728

#28b8ae · #2832b8

#b8287a · #7ab828

Split-complementary

Open in tool →

#b82832 · #b8ae28

#ae28b8 · #b86728 · #32b828

Contrast

#287ab8 as textRatioAAAA largeAAAFix
Aaon white
4.6:1passpassfail
  • AAA: use #1e5b8a as the text (7.2:1)
Aaon black
4.57:1passpassfail
  • AAA: use #4f9dd8 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 #287ab8 as the background.

Brands using this color

Fonts for this mood

#287ab8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #287ab8
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 #287ab8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287ab8-9caec4-df4e56-1f212d-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