Color

#2561da

#2561da
hex#2561da
rgbrgb(37, 97, 218)
hslhsl(220, 71%, 50%)
oklchoklch(0.528 0.196 262.2)
Closest name: Royal Blue (#4169e1)Relative luminance 0.14

Colors that go with #2561da

Charcoal, Crimson and Amber 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 →

#da9e25

#25bcda · #4325da

#da2561 · #61da25

Split-complementary

Open in tool →

#da4325 · #bcda25

#da25bc · #da9e25 · #25da43

Contrast

#2561da as textRatioAAAA largeAAAFix
Aaon white
5.52:1passpassfail
  • AAA: use #1f52b7 as the text (7.12:1)
Aaon black
3.8:1failpassfail
  • AA: use #3b71de as the text (4.6:1)
  • AAA: use #6b94e6 as the text (7:1)
  • AA: or shift the background to #e8e8e8 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2561da as the background.

Brands using this color

Fonts for this mood

#2561da reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2561da
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 #2561da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2561da-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