Color

#491ad5

#491ad5
hex#491ad5
rgbrgb(73, 26, 213)
hslhsl(255, 78%, 47%)
oklchoklch(0.442 0.249 280.4)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0696

Colors that go with #491ad5

Charcoal, Denim and Cobalt 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 →

#a7d51a

#1a49d5 · #a71ad5

#d5491a · #1ad549

Split-complementary

Open in tool →

#d5a71a · #49d51a

#d51a49 · #a7d51a · #1ad5a7

Contrast

#491ad5 as textRatioAAAA largeAAAFix
Aaon white
8.78:1passpasspassPasses AAA — no fix needed.
Aaon black
2.39:1failfailfail
  • AA: use #7f5ceb as the text (4.63:1)
  • AAA: use #9f84f0 as the text (7.03:1)
  • AA: or shift the background to #bababa (4.52:1)
  • AAA: or shift the background to #e6e6e6 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #491ad5 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

#491ad5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #491ad5
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 #491ad5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/491ad5-ab9cc4-dfbd4e-291f2d-e9ebf1?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