Color

#218cde

#218cde
hex#218cde
rgbrgb(33, 140, 222)
hslhsl(206, 74%, 50%)
oklchoklch(0.623 0.154 247.6)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2435

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de7321

#21ded1 · #212ede

#de218c · #8cde21

Split-complementary

Open in tool →

#de212e · #ded121

#d121de · #de7321 · #2ede21

Contrast

#218cde as textRatioAAAA largeAAAFix
Aaon white
3.58:1failpassfail
  • AA: use #1d78bf as the text (4.68:1)
  • AAA: use #165c92 as the text (7.05:1)
  • AA: or shift the background to #212121 (4.5:1)
Aaon black
5.87:1passpassfail
  • AAA: use #409ce2 as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #218cde 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

#218cde reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #218cde
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 #218cde and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/218cde-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