Color

#3648bf

#3648bf
hex#3648bf
rgbrgb(54, 72, 191)
hslhsl(232, 56%, 48%)
oklchoklch(0.464 0.186 270.6)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0918

Colors that go with #3648bf

Charcoal, Sea Green and Steel 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 →

#bfad36

#368dbf · #6836bf

#bf3648 · #48bf36

Split-complementary

Open in tool →

#bf6836 · #8dbf36

#bf368d · #bfad36 · #36bf68

Contrast

#3648bf as textRatioAAAA largeAAAFix
Aaon white
7.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.84:1failfailfail
  • AA: use #5c6cd1 as the text (4.52:1)
  • AAA: use #8893dd as the text (7.26:1)
  • AA: or shift the background to #cccccc (4.61:1)
  • AAA: or shift the background to #fafafa (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3648bf as the background.

Brands using this color

Fonts for this mood

#3648bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3648bf
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 #3648bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3648bf-9c9dc4-df864e-231f2d-e9eef1?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