Color

#4015ac

#4015ac
hex#4015ac
rgbrgb(64, 21, 172)
hslhsl(257, 78%, 38%)
oklchoklch(0.384 0.21 283.3)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.046

Colors that go with #4015ac

Denim, Blue and Crimson 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 →

#82ac15

#1536ac · #8c15ac

#ac4015 · #15ac40

Split-complementary

Open in tool →

#ac8c15 · #36ac15

#ac1536 · #82ac15 · #15ac8c

Contrast

#4015ac as textRatioAAAA largeAAAFix
Aaon white
10.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.92:1failfailfail
  • AA: use #845ceb as the text (4.71:1)
  • AAA: use #a384f0 as the text (7.12:1)
  • AA: or shift the background to #a8a8a8 (4.6:1)
  • AAA: or shift the background to #cfcfcf (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4015ac 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

#4015ac reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4015ac
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 #4015ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4015ac-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