Color

#3517de

#3517de
hex#3517de
rgbrgb(53, 23, 222)
hslhsl(249, 81%, 48%)
oklchoklch(0.436 0.264 273.1)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0664

Colors that go with #3517de

Charcoal, Cobalt Blue and Cornflower 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 →

#c0de17

#175dde · #9817de

#de3517 · #17de35

Split-complementary

Open in tool →

#de9817 · #5dde17

#de175d · #c0de17 · #17de98

Contrast

#3517de as textRatioAAAA largeAAAFix
Aaon white
9.02:1passpasspassPasses AAA — no fix needed.
Aaon black
2.33:1failfailfail
  • AA: use #735dee as the text (4.53:1)
  • AAA: use #9787f2 as the text (7.06:1)
  • AA: or shift the background to #b8b8b8 (4.55:1)
  • AAA: or shift the background to #e3e3e3 (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 #3517de 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

#3517de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3517de
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 #3517de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3517de-a79cc4-dfae4e-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