Color

#2a72df

#2a72df
hex#2a72df
rgbrgb(42, 114, 223)
hslhsl(216, 74%, 52%)
oklchoklch(0.569 0.181 259)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1785

Colors that go with #2a72df

Charcoal, Crimson and Copper 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 →

#df972a

#2acddf · #3c2adf

#df2a72 · #72df2a

Split-complementary

Open in tool →

#df3c2a · #cddf2a

#df2acd · #df972a · #2adf3c

Contrast

#2a72df as textRatioAAAA largeAAAFix
Aaon white
4.59:1passpassfail
  • AAA: use #1a55ad as the text (7.13:1)
Aaon black
4.57:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a72df as the background.

Brands using this color

Fonts for this mood

#2a72df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a72df
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 #2a72df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a72df-9ca7c4-df5f4e-201f2d-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