Color

#659b9f

#659b9f
hex#659b9f
rgbrgb(101, 155, 159)
hslhsl(184, 23%, 51%)
oklchoklch(0.653 0.057 201.8)
Closest name: cadetblue (#5f9ea0)Relative luminance 0.2871

Colors that go with #659b9f

Charcoal, Terracotta 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 #659b9f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9f6965

#659f86 · #657e9f

#9f659b · #9b9f65

Split-complementary

Open in tool →

#9f657e · #9f8665

#86659f · #9f6965 · #7e9f65

Contrast

#659b9f as textRatioAAAA largeAAAFix
Aaon white
3.11:1failpassfail
  • AA: use #517d81 as the text (4.56:1)
  • AAA: use #3b5c5e as the text (7.3:1)
  • AA: or shift the background to #2b2b2b (4.55:1)
Aaon black
6.74:1passpassfail
  • AAA: use #6c9fa3 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #659b9f 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 #659b9f
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 #659b9f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/659b9f-a2b9be-df4e8a-1f262d-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