Color

#3943fe

#3943fe
hex#3943fe
rgbrgb(57, 67, 254)
hslhsl(237, 99%, 61%)
oklchoklch(0.518 0.267 270.2)
Closest name: Meteor Shower (#5533ff)Relative luminance 0.1204

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fef439

#39a5fe · #9239fe

#fe3943 · #43fe39

Split-complementary

Open in tool →

#fe9239 · #a5fe39

#fe39a5 · #fef439 · #39fe92

Contrast

#3943fe as textRatioAAAA largeAAAFix
Aaon white
6.16:1passpassfail
  • AAA: use #2530fe as the text (7.16:1)
Aaon black
3.41:1failpassfail
  • AA: use #5860fe as the text (4.52:1)
  • AAA: use #858bfe as the text (7.12:1)
  • AA: or shift the background to #dedede (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3943fe 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

#3943fe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3943fe
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 #3943fe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3943fe-9f9cc4-df924e-251f2d-e9edf1?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