Color

#217bca

#217bca
hex#217bca
rgbrgb(33, 123, 202)
hslhsl(208, 72%, 46%)
oklchoklch(0.572 0.146 250.1)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1875

Colors that go with #217bca

Charcoal, Crimson and Copper 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 →

#ca7021

#21cac4 · #2126ca

#ca217b · #7bca21

Split-complementary

Open in tool →

#ca2126 · #cac421

#c421ca · #ca7021 · #26ca21

Contrast

#217bca as textRatioAAAA largeAAAFix
Aaon white
4.42:1failpassfail
  • AA: use #2078c5 as the text (4.61:1)
  • AAA: use #185b95 as the text (7.07:1)
  • AA: or shift the background to #080808 (4.53:1)
Aaon black
4.75:1passpassfail
  • AAA: use #4b9be2 as the text (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 #217bca as the background.

Brands using this color

Fonts for this mood

#217bca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #217bca
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 #217bca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/217bca-9cadc4-df4e51-1f212d-e9f1f1?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