Color

#227ca5

#227ca5
hex#227ca5
rgbrgb(34, 124, 165)
hslhsl(199, 66%, 39%)
oklchoklch(0.554 0.103 233.3)
Closest name: Bleu Ciel (#007ba1)Relative luminance 0.1747

Colors that go with #227ca5

Charcoal, Crimson and Royal 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 →

#a54b22

#22a58d · #223aa5

#a5227c · #7ca522

Split-complementary

Open in tool →

#a5223a · #a58d22

#8d22a5 · #a54b22 · #3aa522

Contrast

#227ca5 as textRatioAAAA largeAAAFix
Aaon white
4.67:1passpassfail
  • AAA: use #1a5f7f as the text (7.03:1)
Aaon black
4.49:1failpassfail
  • AA: use #237fa9 as the text (4.68:1)
  • AAA: use #30a0d5 as the text (7.11:1)
  • AA: or shift the background to #fcfcfc (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #227ca5 as the background.

Brands using this color

Fonts for this mood

#227ca5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #227ca5
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 #227ca5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/227ca5-9cb3c4-df4e66-1f232d-e9f1f0?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