Color

#287d9a

#287d9a
hex#287d9a
rgbrgb(40, 125, 154)
hslhsl(195, 59%, 38%)
oklchoklch(0.553 0.09 225.1)
Closest name: Ahoy! Blue (#0082a1)Relative luminance 0.1745

Colors that go with #287d9a

Charcoal, Crimson and Royal Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9a4428

#289a7d · #28449a

#9a287d · #7d9a28

Split-complementary

Open in tool →

#9a2844 · #9a7d28

#7d289a · #9a4428 · #449a28

Contrast

#287d9a as textRatioAAAA largeAAAFix
Aaon white
4.68:1passpassfail
  • AAA: use #1e6076 as the text (7.02:1)
Aaon black
4.49:1failpassfail
  • AA: use #29819e as the text (4.73:1)
  • AAA: use #33a2c7 as the text (7.13:1)
  • AA: or shift the background to #fcfcfc (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #287d9a 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

#287d9a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #287d9a
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

analyze #287d9a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287d9a-9cb5c4-df4e70-1f242d-e9f1ef?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