Color

#2345cd

#2345cd
hex#2345cd
rgbrgb(35, 69, 205)
hslhsl(228, 71%, 47%)
oklchoklch(0.464 0.212 266.4)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0902

Colors that go with #2345cd

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 →

#cdab23

#239acd · #5623cd

#cd2345 · #45cd23

Split-complementary

Open in tool →

#cd5623 · #9acd23

#cd239a · #cdab23 · #23cd56

Contrast

#2345cd as textRatioAAAA largeAAAFix
Aaon white
7.49:1passpasspassPasses AAA — no fix needed.
Aaon black
2.8:1failfailfail
  • AA: use #516ee1 as the text (4.67:1)
  • AAA: use #7c92e9 as the text (7.15:1)
  • AA: or shift the background to #c9c9c9 (4.52:1)
  • AAA: or shift the background to #fafafa (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2345cd as the background.

Brands using this color

Fonts for this mood

#2345cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2345cd
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 #2345cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2345cd-9c9fc4-df7c4e-231f2d-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