Color

#287d9f

#287d9f
hex#287d9f
rgbrgb(40, 125, 159)
hslhsl(197, 60%, 39%)
oklchoklch(0.555 0.094 229.1)
Closest name: Bleu Ciel (#007ba1)Relative luminance 0.1762

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9f4a28

#289f85 · #28429f

#9f287d · #7d9f28

Split-complementary

Open in tool →

#9f2842 · #9f8528

#85289f · #9f4a28 · #429f28

Contrast

#287d9f as textRatioAAAA largeAAAFix
Aaon white
4.64:1passpassfail
  • AAA: use #1e5d76 as the text (7.29:1)
Aaon black
4.52:1passpassfail
  • AAA: use #33a1cc as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #287d9f 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

#287d9f reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #287d9f
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 #287d9f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/287d9f-9cb4c4-df4e6b-1f232d-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