Color

#4a10da

#4a10da
hex#4a10da
rgbrgb(74, 16, 218)
hslhsl(257, 86%, 46%)
oklchoklch(0.442 0.258 280.5)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0689

Colors that go with #4a10da

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 →

#a1da10

#103cda · #ae10da

#da4a10 · #10da4a

Split-complementary

Open in tool →

#daae10 · #3cda10

#da103c · #a1da10 · #10daae

Contrast

#4a10da as textRatioAAAA largeAAAFix
Aaon white
8.83:1passpasspassPasses AAA — no fix needed.
Aaon black
2.38:1failfailfail
  • AA: use #8459f3 as the text (4.7:1)
  • AAA: use #a484f6 as the text (7.21:1)
  • AA: or shift the background to #bababa (4.55:1)
  • AAA: or shift the background to #e6e6e6 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4a10da 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

#4a10da reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4a10da
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 #4a10da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4a10da-ac9cc4-dfc24e-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