Color

#305bdf

#305bdf
hex#305bdf
rgbrgb(48, 91, 223)
hslhsl(225, 73%, 53%)
oklchoklch(0.524 0.207 265.7)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1344

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dfb330

#30b3df · #5b30df

#df305b · #5bdf30

Split-complementary

Open in tool →

#df5b30 · #b3df30

#df30b3 · #dfb330 · #30df5b

Contrast

#305bdf as textRatioAAAA largeAAAFix
Aaon white
5.69:1passpassfail
  • AAA: use #204ccf as the text (7.01:1)
Aaon black
3.69:1failpassfail
  • AA: use #466de2 as the text (4.55:1)
  • AAA: use #7693ea as the text (7.13:1)
  • AA: or shift the background to #e6e6e6 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #305bdf 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

#305bdf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #305bdf
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 #305bdf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/305bdf-9ca1c4-df754e-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