Color

#618f8d

#618f8d
hex#618f8d
rgbrgb(97, 143, 141)
hslhsl(177, 19%, 47%)
oklchoklch(0.616 0.05 192.5)
Closest name: Arctic (#648589)Relative luminance 0.2411

Colors that go with #618f8d

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 →

#8f6163

#618f76 · #617a8f

#8c618f · #8f8c61

Split-complementary

Open in tool →

#8f617a · #8f7661

#76618f · #8f6163 · #7a8f61

Contrast

#618f8d as textRatioAAAA largeAAAFix
Aaon white
3.61:1failpassfail
  • AA: use #557c7a as the text (4.62:1)
  • AAA: use #405e5d as the text (7.05:1)
  • AA: or shift the background to #1f1f1f (4.57:1)
Aaon black
5.82:1passpassfail
  • AAA: use #709e9c 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 #618f8d 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 #618f8d
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 #618f8d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/618f8d-a2bcbe-d4599b-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