Color

#345b9d

#345b9d
hex#345b9d
rgbrgb(52, 91, 157)
hslhsl(218, 50%, 41%)
oklchoklch(0.477 0.116 260.3)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1065

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#9d7634

#348f9d · #42349d

#9d345b · #5b9d34

Split-complementary

Open in tool →

#9d4234 · #8f9d34

#9d348f · #9d7634 · #349d42

Contrast

#345b9d as textRatioAAAA largeAAAFix
Aaon white
6.71:1passpassfail
  • AAA: use #335899 as the text (7.01:1)
Aaon black
3.13:1failpassfail
  • AA: use #4774c2 as the text (4.55:1)
  • AAA: use #7597d1 as the text (7.1:1)
  • AA: or shift the background to #d4d4d4 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #345b9d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#345b9d reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #345b9d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #345b9d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/345b9d-9ca6c4-df644e-201f2d-e9f0f1?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