Color

#3215ef

#3215ef
hex#3215ef
rgbrgb(50, 21, 239)
hslhsl(248, 87%, 51%)
oklchoklch(0.454 0.283 271.2)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0745

Colors that go with #3215ef

Charcoal, Cobalt Blue and Cornflower 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 →

#d2ef15

#1565ef · #9f15ef

#ef3215 · #15ef32

Split-complementary

Open in tool →

#ef9f15 · #65ef15

#ef1565 · #d2ef15 · #15ef9f

Contrast

#3215ef as textRatioAAAA largeAAAFix
Aaon white
8.44:1passpasspassPasses AAA — no fix needed.
Aaon black
2.49:1failfailfail
  • AA: use #715df4 as the text (4.57:1)
  • AAA: use #9788f7 as the text (7.18:1)
  • AA: or shift the background to #bfbfbf (4.59:1)
  • AAA: or shift the background to #ebebeb (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3215ef as the background.

Brands using this color

Fonts for this mood

#3215ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3215ef
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 #3215ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3215ef-a69cc4-dfac4e-271f2d-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