Color

#284dd2

#284dd2
hex#284dd2
rgbrgb(40, 77, 210)
hslhsl(227, 68%, 49%)
oklchoklch(0.484 0.208 266.2)
Closest name: Denim (#1560bd)Relative luminance 0.1041

Colors that go with #284dd2

Charcoal, Sea Green and Amber 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.

Real palettes that use #284dd2

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d2ad28

#28a2d2 · #5828d2

#d2284d · #4dd228

Split-complementary

Open in tool →

#d25828 · #a2d228

#d228a2 · #d2ad28 · #28d258

Contrast

#284dd2 as textRatioAAAA largeAAAFix
Aaon white
6.81:1passpassfail
  • AAA: use #274bce as the text (7.04:1)
Aaon black
3.08:1failpassfail
  • AA: use #4f6ede as the text (4.62:1)
  • AAA: use #7a91e6 as the text (7.02:1)
  • AA: or shift the background to #d4d4d4 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #284dd2 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#284dd2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #284dd2
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 #284dd2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/284dd2-9ca0c4-df7a4e-221f2d-e9eff1?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