Color

#3450cb

#3450cb
hex#3450cb
rgbrgb(52, 80, 203)
hslhsl(229, 59%, 50%)
oklchoklch(0.488 0.193 268.3)
Closest name: Denim (#1560bd)Relative luminance 0.1078

Colors that go with #3450cb

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 →

#cbaf34

#349bcb · #6434cb

#cb3450 · #50cb34

Split-complementary

Open in tool →

#cb6434 · #9bcb34

#cb349b · #cbaf34 · #34cb64

Contrast

#3450cb as textRatioAAAA largeAAAFix
Aaon white
6.65:1passpassfail
  • AAA: use #324dc3 as the text (7.03:1)
Aaon black
3.16:1failpassfail
  • AA: use #596fd4 as the text (4.65:1)
  • AAA: use #8192df as the text (7.11:1)
  • AA: or shift the background to #d6d6d6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3450cb as the background.

Brands using this color

Fonts for this mood

#3450cb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3450cb
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 #3450cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3450cb-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