Color

#4007cf

#4007cf
hex#4007cf
rgbrgb(64, 7, 207)
hslhsl(257, 93%, 42%)
oklchoklch(0.418 0.252 278.5)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0575

Colors that go with #4007cf

Charcoal, Cobalt Blue and Cornflower 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 →

#96cf07

#0733cf · #a407cf

#cf4007 · #07cf40

Split-complementary

Open in tool →

#cfa407 · #33cf07

#cf0733 · #96cf07 · #07cfa4

Contrast

#4007cf as textRatioAAAA largeAAAFix
Aaon white
9.77:1passpasspassPasses AAA — no fix needed.
Aaon black
2.15:1failfailfail
  • AA: use #8253f9 as the text (4.55:1)
  • AAA: use #a684fb as the text (7.31:1)
  • AA: or shift the background to #b0b0b0 (4.51:1)
  • AAA: or shift the background to #dbdbdb (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4007cf 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

#4007cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4007cf
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 #4007cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4007cf-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