Color

#217bc0

#217bc0
hex#217bc0
rgbrgb(33, 123, 192)
hslhsl(206, 71%, 44%)
oklchoklch(0.566 0.134 247)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.183

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#c06621

#21c0b5 · #212bc0

#c0217b · #7bc021

Split-complementary

Open in tool →

#c0212b · #c0b521

#b521c0 · #c06621 · #2bc021

Contrast

#217bc0 as textRatioAAAA largeAAAFix
Aaon white
4.51:1passpassfail
  • AAA: use #185c90 as the text (7.06:1)
Aaon black
4.66:1passpassfail
  • AAA: use #439cdf as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #217bc0 as the background.

Brands using this color

Fonts for this mood

#217bc0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #217bc0
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #217bc0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/217bc0-9caec4-df4e56-1f212d-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