Color

#223ebf

#223ebf
hex#223ebf
rgbrgb(34, 62, 191)
hslhsl(229, 70%, 44%)
oklchoklch(0.438 0.203 267.1)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0755

Colors that go with #223ebf

Charcoal, Sea Green and Steel 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 →

#bfa222

#228dbf · #5322bf

#bf223e · #3ebf22

Split-complementary

Open in tool →

#bf5322 · #8dbf22

#bf228d · #bfa222 · #22bf53

Contrast

#223ebf as textRatioAAAA largeAAAFix
Aaon white
8.37:1passpasspassPasses AAA — no fix needed.
Aaon black
2.51:1failfailfail
  • AA: use #526ce0 as the text (4.58:1)
  • AAA: use #7d91e8 as the text (7.09:1)
  • AA: or shift the background to #bfbfbf (4.55:1)
  • AAA: or shift the background to #ebebeb (7.02:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/223ebf-9c9fc4-df7e4e-231f2d-e9eef1?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