Color

#678cda

#678cda
hex#678cda
rgbrgb(103, 140, 218)
hslhsl(221, 61%, 63%)
oklchoklch(0.647 0.125 264)
Closest name: Blue Jay (#5588dd)Relative luminance 0.267

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dab667

#67c5da · #7c67da

#da678c · #8cda67

Split-complementary

Open in tool →

#da7c67 · #c5da67

#da67c5 · #dab667 · #67da7c

Contrast

#678cda as textRatioAAAA largeAAAFix
Aaon white
3.31:1failpassfail
  • AA: use #4673d2 as the text (4.52:1)
  • AAA: use #2a53ac as the text (7.16:1)
  • AA: or shift the background to #262626 (4.57:1)
Aaon black
6.34:1passpassfail
  • AAA: use #7395dd 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 #678cda 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

#678cda reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #678cda
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 #678cda and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/678cda-9ca4c4-df6b4e-211f2d-e9eff1?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