Color

#4d18dc

#4d18dc
hex#4d18dc
rgbrgb(77, 24, 220)
hslhsl(256, 80%, 48%)
oklchoklch(0.451 0.256 281.1)
Closest name: Blurple (#5539cc)Relative luminance 0.074

Colors that go with #4d18dc

Charcoal, 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 →

#a8dc18

#1846dc · #af18dc

#dc4d18 · #18dc4d

Split-complementary

Open in tool →

#dcaf18 · #46dc18

#dc1846 · #a8dc18 · #18dcaf

Contrast

#4d18dc as textRatioAAAA largeAAAFix
Aaon white
8.47:1passpasspassPasses AAA — no fix needed.
Aaon black
2.48:1failfailfail
  • AA: use #815aed as the text (4.62:1)
  • AAA: use #a083f1 as the text (7.01:1)
  • AA: or shift the background to #bdbdbd (4.51:1)
  • AAA: or shift the background to #ebebeb (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 #4d18dc 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

#4d18dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4d18dc
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 #4d18dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4d18dc-ab9cc4-dfbf4e-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