Color

#3b38fa

#3b38fa
hex#3b38fa
rgbrgb(59, 56, 250)
hslhsl(241, 95%, 60%)
oklchoklch(0.501 0.272 271.5)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.1066

Colors that go with #3b38fa

Charcoal, Amber and Cobalt Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f7fa38

#3896fa · #9c38fa

#fa3b38 · #38fa3b

Split-complementary

Open in tool →

#fa9c38 · #96fa38

#fa3896 · #f7fa38 · #38fa9c

Contrast

#3b38fa as textRatioAAAA largeAAAFix
Aaon white
6.7:1passpassfail
  • AAA: use #322efa as the text (7.22:1)
Aaon black
3.13:1failpassfail
  • AA: use #6260fb as the text (4.59:1)
  • AAA: use #8a88fc as the text (7.01:1)
  • AA: or shift the background to #d4d4d4 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b38fa 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

#3b38fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b38fa
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

analyze #3b38fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b38fa-a19cc4-df9b4e-261f2d-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