Color

#212bed

#212bed
hex#212bed
rgbrgb(33, 43, 237)
hslhsl(237, 85%, 53%)
oklchoklch(0.461 0.273 267.4)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0817

Colors that go with #212bed

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 →

#ede321

#2191ed · #7d21ed

#ed212b · #2bed21

Split-complementary

Open in tool →

#ed7d21 · #91ed21

#ed2191 · #ede321 · #21ed7d

Contrast

#212bed as textRatioAAAA largeAAAFix
Aaon white
7.98:1passpasspassPasses AAA — no fix needed.
Aaon black
2.63:1failfailfail
  • AA: use #5f66f2 as the text (4.67:1)
  • AAA: use #898ef5 as the text (7.25:1)
  • AA: or shift the background to #c4c4c4 (4.57:1)
  • AAA: or shift the background to #f2f2f2 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #212bed as the background.

Brands using this color

Fonts for this mood

#212bed reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #212bed
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 #212bed and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/212bed-9f9cc4-df924e-251f2d-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