Color

#678e8a

#678e8a
hex#678e8a
rgbrgb(103, 142, 138)
hslhsl(174, 16%, 48%)
oklchoklch(0.617 0.044 188.2)
Closest name: Arctic (#648589)Relative luminance 0.2406

Colors that go with #678e8a

Charcoal, Copper and Blush Pink 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.

Real palettes that use #678e8a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8e676b

#678e76 · #677e8e

#8a678e · #8e8a67

Split-complementary

Open in tool →

#8e677e · #8e7667

#76678e · #8e676b · #7e8e67

Contrast

#678e8a as textRatioAAAA largeAAAFix
Aaon white
3.61:1failpassfail
  • AA: use #5a7c79 as the text (4.57:1)
  • AAA: use #425c59 as the text (7.22:1)
  • AA: or shift the background to #1f1f1f (4.56:1)
Aaon black
5.81:1passpassfail
  • AAA: use #7a9f9b as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #678e8a as the background.

Brands using this color

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

mcpConnect your agent — build around #678e8a
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 #678e8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/678e8a-a2bebe-d459a1-1f292d-e9f1ed?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