Color

#211dfc

#211dfc
hex#211dfc
rgbrgb(33, 29, 252)
hslhsl(241, 97%, 55%)
oklchoklch(0.467 0.297 267.2)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0823

Colors that go with #211dfc

Charcoal, Crimson 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 →

#f8fc1d

#1d89fc · #901dfc

#fc211d · #1dfc21

Split-complementary

Open in tool →

#fc901d · #89fc1d

#fc1d89 · #f8fc1d · #1dfc90

Contrast

#211dfc as textRatioAAAA largeAAAFix
Aaon white
7.94:1passpasspassPasses AAA — no fix needed.
Aaon black
2.65:1failfailfail
  • AA: use #615efd as the text (4.53:1)
  • AAA: use #8d8bfd as the text (7.24:1)
  • AA: or shift the background to #c4c4c4 (4.55:1)
  • AAA: or shift the background to #f2f2f2 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #211dfc as the background.

Brands using this color

Fonts for this mood

#211dfc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #211dfc
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 #211dfc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/211dfc-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