Color

#355dbb

#355dbb
hex#355dbb
rgbrgb(53, 93, 187)
hslhsl(222, 56%, 47%)
oklchoklch(0.502 0.155 264.2)
Closest name: Denim (#1560bd)Relative luminance 0.1217

Colors that go with #355dbb

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 →

#bb9335

#35a0bb · #5035bb

#bb355d · #5dbb35

Split-complementary

Open in tool →

#bb5035 · #a0bb35

#bb35a0 · #bb9335 · #35bb50

Contrast

#355dbb as textRatioAAAA largeAAAFix
Aaon white
6.11:1passpassfail
  • AAA: use #2f53a7 as the text (7.2:1)
Aaon black
3.43:1failpassfail
  • AA: use #4c73cd as the text (4.64:1)
  • AAA: use #7895d9 as the text (7.1:1)
  • AA: or shift the background to #dedede (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #355dbb as the background.

Brands using this color

Fonts for this mood

#355dbb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #355dbb
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 #355dbb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/355dbb-9ca3c4-df6e4e-211f2d-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