Color

#3e18af

#3e18af
hex#3e18af
rgbrgb(62, 24, 175)
hslhsl(255, 76%, 39%)
oklchoklch(0.388 0.212 281.7)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0477

Colors that go with #3e18af

Charcoal, Denim and 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 →

#89af18

#183eaf · #8918af

#af3e18 · #18af3e

Split-complementary

Open in tool →

#af8918 · #3eaf18

#af183e · #89af18 · #18af89

Contrast

#3e18af as textRatioAAAA largeAAAFix
Aaon white
10.74:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #805de9 as the text (4.66:1)
  • AAA: use #a086ee as the text (7.14:1)
  • AA: or shift the background to #a8a8a8 (4.52:1)
  • AAA: or shift the background to #d1d1d1 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e18af 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

#3e18af reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e18af
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 #3e18af and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e18af-ab9cc4-dfbd4e-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