Color

#3723be

#3723be
hex#3723be
rgbrgb(55, 35, 190)
hslhsl(248, 69%, 44%)
oklchoklch(0.41 0.222 276.1)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0573

Colors that go with #3723be

Charcoal, Steel 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.

Real palettes that use #3723be

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#a9be23

#235cbe · #8523be

#be3723 · #23be37

Split-complementary

Open in tool →

#be8523 · #5cbe23

#be235c · #a9be23 · #23be85

Contrast

#3723be as textRatioAAAA largeAAAFix
Aaon white
9.78:1passpasspassPasses AAA — no fix needed.
Aaon black
2.15:1failfailfail
  • AA: use #7564e3 as the text (4.69:1)
  • AAA: use #978bea as the text (7.2:1)
  • AA: or shift the background to #b0b0b0 (4.51:1)
  • AAA: or shift the background to #dbdbdb (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 #3723be 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

#3723be reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3723be
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 #3723be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3723be-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