Color

#3519eb

#3519eb
hex#3519eb
rgbrgb(53, 25, 235)
hslhsl(248, 84%, 51%)
oklchoklch(0.453 0.277 272.1)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0745

Colors that go with #3519eb

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 →

#cfeb19

#1966eb · #9e19eb

#eb3519 · #19eb35

Split-complementary

Open in tool →

#eb9e19 · #66eb19

#eb1966 · #cfeb19 · #19eb9e

Contrast

#3519eb as textRatioAAAA largeAAAFix
Aaon white
8.43:1passpasspassPasses AAA — no fix needed.
Aaon black
2.49:1failfailfail
  • AA: use #735ff1 as the text (4.64:1)
  • AAA: use #988af5 as the text (7.29:1)
  • AA: or shift the background to #bfbfbf (4.59:1)
  • AAA: or shift the background to #ebebeb (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3519eb as the background.

Brands using this color

Fonts for this mood

#3519eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3519eb
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 #3519eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3519eb-a69cc4-dfac4e-271f2d-e9ecf1?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