Color

#4e15b7

#4e15b7
hex#4e15b7
rgbrgb(78, 21, 183)
hslhsl(261, 79%, 40%)
oklchoklch(0.41 0.22 287.6)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0557

Colors that go with #4e15b7

Charcoal, Royal Blue and Midnight 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 →

#7eb715

#152eb7 · #9e15b7

#b74e15 · #15b74e

Split-complementary

Open in tool →

#b79e15 · #2eb715

#b7152e · #7eb715 · #15b79e

Contrast

#4e15b7 as textRatioAAAA largeAAAFix
Aaon white
9.93:1passpasspassPasses AAA — no fix needed.
Aaon black
2.11:1failfailfail
  • AA: use #8a56eb as the text (4.61:1)
  • AAA: use #aa84f1 as the text (7.28:1)
  • AA: or shift the background to #b0b0b0 (4.58:1)
  • AAA: or shift the background to #d9d9d9 (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 #4e15b7 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

#4e15b7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4e15b7
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 #4e15b7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4e15b7-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