Color

#3634b2

#3634b2
hex#3634b2
rgbrgb(54, 52, 178)
hslhsl(241, 55%, 45%)
oklchoklch(0.419 0.192 274.9)
Closest name: Bluebell (#333399)Relative luminance 0.0645

Colors that go with #3634b2

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 →

#b0b234

#3471b2 · #7534b2

#b23634 · #34b236

Split-complementary

Open in tool →

#b27534 · #71b234

#b23471 · #b0b234 · #34b275

Contrast

#3634b2 as textRatioAAAA largeAAAFix
Aaon white
9.17:1passpasspassPasses AAA — no fix needed.
Aaon black
2.29:1failfailfail
  • AA: use #6b69d3 as the text (4.59:1)
  • AAA: use #9290df as the text (7.28:1)
  • AA: or shift the background to #b8b8b8 (4.62:1)
  • AAA: or shift the background to #e3e3e3 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3634b2 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

#3634b2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3634b2
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 #3634b2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3634b2-a19cc4-df9b4e-261f2d-e9edf1?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