Color

#658b8a

#658b8a
hex#658b8a
rgbrgb(101, 139, 138)
hslhsl(178, 16%, 47%)
oklchoklch(0.608 0.042 194.1)
Closest name: Arctic (#648589)Relative luminance 0.2307

Colors that go with #658b8a

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8b6566

#658b77 · #65798b

#8a658b · #8b8a65

Split-complementary

Open in tool →

#8b6579 · #8b7765

#77658b · #8b6566 · #798b65

Contrast

#658b8a as textRatioAAAA largeAAAFix
Aaon white
3.74:1failpassfail
  • AA: use #5a7c7b as the text (4.56:1)
  • AAA: use #425c5b as the text (7.21:1)
  • AA: or shift the background to #1c1c1c (4.56:1)
Aaon black
5.61:1passpassfail
  • AAA: use #779c9b as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #658b8a 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 #658b8a
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 #658b8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/658b8a-a2bcbe-d45999-1f282d-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