Color

#5b72c8

#5b72c8
hex#5b72c8
rgbrgb(91, 114, 200)
hslhsl(227, 50%, 57%)
oklchoklch(0.575 0.135 270.4)
Closest name: Flood (#6677bb)Relative luminance 0.1843

Colors that go with #5b72c8

Charcoal, Sea Green 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 →

#c8b05b

#5ba9c8 · #7a5bc8

#c85b72 · #72c85b

Split-complementary

Open in tool →

#c87a5b · #a9c85b

#c85ba9 · #c8b05b · #5bc87a

Contrast

#5b72c8 as textRatioAAAA largeAAAFix
Aaon white
4.48:1failpassfail
  • AA: use #576fc7 as the text (4.66:1)
  • AAA: use #3952ac as the text (7.06:1)
  • AA: or shift the background to #050505 (4.55:1)
Aaon black
4.69:1passpassfail
  • AAA: use #8193d5 as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b72c8 as the background.

Brands using this color

Fonts for this mood

#5b72c8 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5b72c8
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 #5b72c8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b72c8-9ca0c4-df7a4e-221f2d-e9eff1?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