Color

#3c73e2

#3c73e2
hex#3c73e2
rgbrgb(60, 115, 226)
hslhsl(220, 74%, 56%)
oklchoklch(0.579 0.179 262.4)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1871

Colors that go with #3c73e2

Charcoal, Crimson and Copper 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 →

#e2aa3c

#3cc6e2 · #573ce2

#e23c73 · #73e23c

Split-complementary

Open in tool →

#e2573c · #c6e23c

#e23cc6 · #e2aa3c · #3ce257

Contrast

#3c73e2 as textRatioAAAA largeAAAFix
Aaon white
4.43:1failpassfail
  • AA: use #3770e1 as the text (4.6:1)
  • AAA: use #1c51ba as the text (7.15:1)
  • AA: or shift the background to #080808 (4.52:1)
Aaon black
4.74:1passpassfail
  • AAA: use #6d96e9 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c73e2 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

#3c73e2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3c73e2
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 #3c73e2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c73e2-9ca5c4-df694e-211f2d-e9f0f1?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