Color

#3927fc

#3927fc
hex#3927fc
rgbrgb(57, 39, 252)
hslhsl(245, 97%, 57%)
oklchoklch(0.485 0.286 271.7)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.0935

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eafc27

#2780fc · #a327fc

#fc3927 · #27fc39

Split-complementary

Open in tool →

#fca327 · #80fc27

#fc2780 · #eafc27 · #27fca3

Contrast

#3927fc as textRatioAAAA largeAAAFix
Aaon white
7.32:1passpasspassPasses AAA — no fix needed.
Aaon black
2.87:1failfailfail
  • AA: use #6b5efd as the text (4.64:1)
  • AAA: use #9086fd as the text (7.01:1)
  • AA: or shift the background to #cccccc (4.56:1)
  • AAA: or shift the background to #fafafa (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3927fc 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

#3927fc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3927fc
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 #3927fc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3927fc-a49cc4-dfa54e-261f2d-e9ecf1?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