Color

#3b6168

#3b6168
hex#3b6168
rgbrgb(59, 97, 104)
hslhsl(189, 28%, 32%)
oklchoklch(0.467 0.045 210.5)
Closest name: After the Storm (#33616a)Relative luminance 0.1048

Colors that go with #3b6168

Sienna, Blue and Cadet Blue 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 →

#68423b

#3b6858 · #3b4b68

#683b62 · #62683b

Split-complementary

Open in tool →

#683b4b · #68583b

#583b68 · #68423b · #4b683b

Contrast

#3b6168 as textRatioAAAA largeAAAFix
Aaon white
6.78:1passpassfail
Aaon black
3.1:1failpassfail
  • AA: use #4b7d86 as the text (4.58:1)
  • AAA: use #669fa9 as the text (7.1:1)
  • AA: or shift the background to #d4d4d4 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b6168 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 #3b6168
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 #3b6168 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b6168-a2b7be-df4e7e-1f252d-e9f1ee?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