Color

#285ca4

#285ca4
hex#285ca4
rgbrgb(40, 92, 164)
hslhsl(215, 61%, 40%)
oklchoklch(0.478 0.129 257.3)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1079

Colors that go with #285ca4

Charcoal, Firebrick and Sea Green 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 →

#a47028

#289aa4 · #3228a4

#a4285c · #5ca428

Split-complementary

Open in tool →

#a43228 · #9aa428

#a4289a · #a47028 · #28a432

Contrast

#285ca4 as textRatioAAAA largeAAAFix
Aaon white
6.65:1passpassfail
  • AAA: use #26579c as the text (7.18:1)
Aaon black
3.16:1failpassfail
  • AA: use #3675ce as the text (4.59:1)
  • AAA: use #6797da as the text (7.02:1)
  • AA: or shift the background to #d6d6d6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #285ca4 as the background.

Brands using this color

Fonts for this mood

#285ca4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #285ca4
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 #285ca4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/285ca4-9ca8c4-df5d4e-201f2d-e9f0f1?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