Color

#211fa8

#211fa8
hex#211fa8
rgbrgb(33, 31, 168)
hslhsl(241, 69%, 39%)
oklchoklch(0.367 0.205 270.7)
Closest name: Deepsea Kraken (#082599)Relative luminance 0.0413

Colors that go with #211fa8

Charcoal, 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 →

#a6a81f

#1f61a8 · #661fa8

#a8211f · #1fa821

Split-complementary

Open in tool →

#a8661f · #61a81f

#a81f61 · #a6a81f · #1fa866

Contrast

#211fa8 as textRatioAAAA largeAAAFix
Aaon white
11.5:1passpasspassPasses AAA — no fix needed.
Aaon black
1.83:1failfailfail
  • AA: use #6a68e3 as the text (4.7:1)
  • AAA: use #908fea as the text (7.3:1)
  • AA: or shift the background to #a3a3a3 (4.56:1)
  • AAA: or shift the background to #cccccc (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #211fa8 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

#211fa8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #211fa8
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 #211fa8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/211fa8-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