Color

#3561bb

#3561bb
hex#3561bb
rgbrgb(53, 97, 187)
hslhsl(220, 56%, 47%)
oklchoklch(0.511 0.15 262.7)
Closest name: Denim (#1560bd)Relative luminance 0.1289

Colors that go with #3561bb

Charcoal, Sea Green and Sienna 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 →

#bb8e35

#35a5bb · #4b35bb

#bb3561 · #61bb35

Split-complementary

Open in tool →

#bb4b35 · #a5bb35

#bb35a5 · #bb8e35 · #35bb4b

Contrast

#3561bb as textRatioAAAA largeAAAFix
Aaon white
5.87:1passpassfail
  • AAA: use #2e55a3 as the text (7.13:1)
Aaon black
3.58:1failpassfail
  • AA: use #4874cb as the text (4.64:1)
  • AAA: use #7495d8 as the text (7.03:1)
  • AA: or shift the background to #e3e3e3 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3561bb as the background.

Brands using this color

Fonts for this mood

#3561bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3561bb
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 #3561bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3561bb-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