Color

#4a15ac

#4a15ac
hex#4a15ac
rgbrgb(74, 21, 172)
hslhsl(261, 78%, 38%)
oklchoklch(0.394 0.209 288)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0497

Colors that go with #4a15ac

Royal Blue, Cobalt 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 →

#78ac15

#152cac · #9615ac

#ac4a15 · #15ac4a

Split-complementary

Open in tool →

#ac9615 · #2cac15

#ac152c · #78ac15 · #15ac96

Contrast

#4a15ac as textRatioAAAA largeAAAFix
Aaon white
10.53:1passpasspassPasses AAA — no fix needed.
Aaon black
1.99:1failfailfail
  • AA: use #8b57ea as the text (4.65:1)
  • AAA: use #aa84f0 as the text (7.27:1)
  • AA: or shift the background to #ababab (4.59:1)
  • AAA: or shift the background to #d4d4d4 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4a15ac 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

#4a15ac reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4a15ac
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 #4a15ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4a15ac-af9cc4-dfcb4e-2a1f2d-e9eaf1?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