Color

#688cb1

#688cb1
hex#688cb1
rgbrgb(104, 140, 177)
hslhsl(210, 32%, 55%)
oklchoklch(0.628 0.069 249.7)
Closest name: Galactic Gossamer (#7f8cb8)Relative luminance 0.2487

Colors that go with #688cb1

Charcoal, Copper and Amber 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 →

#b18c68

#68b1b1 · #6868b1

#b1688c · #8cb168

Split-complementary

Open in tool →

#b16868 · #b1b168

#b168b1 · #b18c68 · #68b168

Contrast

#688cb1 as textRatioAAAA largeAAAFix
Aaon white
3.51:1failpassfail
  • AA: use #51789e as the text (4.64:1)
  • AAA: use #3d5976 as the text (7.27:1)
  • AA: or shift the background to #212121 (4.58:1)
Aaon black
5.97:1passpassfail
  • AAA: use #7899ba 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 #688cb1 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #688cb1
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 #688cb1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/688cb1-9cabc4-df514e-1f202d-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