Color

#223c91

#223c91
hex#223c91
rgbrgb(34, 60, 145)
hslhsl(226, 62%, 35%)
oklchoklch(0.391 0.144 266.6)
Closest name: Bluebell (#333399)Relative luminance 0.0562

Colors that go with #223c91

Charcoal, Steel Blue and 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 →

#917722

#227391 · #3f2291

#91223c · #3c9122

Split-complementary

Open in tool →

#913f22 · #739122

#912273 · #917722 · #22913f

Contrast

#223c91 as textRatioAAAA largeAAAFix
Aaon white
9.89:1passpasspassPasses AAA — no fix needed.
Aaon black
2.12:1failfailfail
  • AA: use #5170d6 as the text (4.64:1)
  • AAA: use #7b92e0 as the text (7.03:1)
  • AA: or shift the background to #b0b0b0 (4.56:1)
  • AAA: or shift the background to #d9d9d9 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #223c91 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#223c91 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #223c91
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 #223c91 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/223c91-9ca1c4-df774e-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