Color

#3775fb

#3775fb
hex#3775fb
rgbrgb(55, 117, 251)
hslhsl(221, 96%, 60%)
oklchoklch(0.599 0.21 262.9)
Closest name: Azure (#007fff)Relative luminance 0.205

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbbd37

#37d7fb · #5b37fb

#fb3775 · #75fb37

Split-complementary

Open in tool →

#fb5b37 · #d7fb37

#fb37d7 · #fbbd37 · #37fb5b

Contrast

#3775fb as textRatioAAAA largeAAAFix
Aaon white
4.12:1failpassfail
  • AA: use #286bfb as the text (4.58:1)
  • AAA: use #0449dc as the text (7.02:1)
  • AA: or shift the background to #121212 (4.55:1)
Aaon black
5.1:1passpassfail
  • AAA: use #6494fc as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3775fb 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

#3775fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3775fb
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 #3775fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3775fb-9ca4c4-df6b4e-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