Color

#354da7

#354da7
hex#354da7
rgbrgb(53, 77, 167)
hslhsl(227, 52%, 43%)
oklchoklch(0.454 0.147 268.6)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0885

Colors that go with #354da7

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 →

#a78e35

#3586a7 · #5535a7

#a7354d · #4da735

Split-complementary

Open in tool →

#a75535 · #86a735

#a73586 · #a78e35 · #35a755

Contrast

#354da7 as textRatioAAAA largeAAAFix
Aaon white
7.58:1passpasspassPasses AAA — no fix needed.
Aaon black
2.77:1failfailfail
  • AA: use #5871ca as the text (4.63:1)
  • AAA: use #8395d8 as the text (7.26:1)
  • AA: or shift the background to #c9c9c9 (4.58:1)
  • AAA: or shift the background to #f7f7f7 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #354da7 as the background.

Brands using this color

Fonts for this mood

#354da7 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #354da7
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 #354da7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/354da7-9ca0c4-df7a4e-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