Color

#3347fa

#3347fa
hex#3347fa
rgbrgb(51, 71, 250)
hslhsl(234, 95%, 59%)
oklchoklch(0.517 0.261 268.8)
Closest name: C64 Blue (#003aff)Relative luminance 0.1211

Colors that go with #3347fa

Charcoal, Crimson and Sea Green 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 →

#fae633

#33aafa · #8333fa

#fa3347 · #47fa33

Split-complementary

Open in tool →

#fa8333 · #aafa33

#fa33aa · #fae633 · #33fa83

Contrast

#3347fa as textRatioAAAA largeAAAFix
Aaon white
6.14:1passpassfail
  • AAA: use #1f35f9 as the text (7.15:1)
Aaon black
3.42:1failpassfail
  • AA: use #5666fb as the text (4.69:1)
  • AAA: use #838ffc as the text (7.3:1)
  • AA: or shift the background to #dedede (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 #3347fa as the background.

Brands using this color

Fonts for this mood

#3347fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3347fa
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 #3347fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3347fa-9d9cc4-df8a4e-241f2d-e9eef1?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