Color

#59999b

#59999b
hex#59999b
rgbrgb(89, 153, 155)
hslhsl(182, 27%, 48%)
oklchoklch(0.641 0.066 198.2)
Closest name: cadetblue (#5f9ea0)Relative luminance 0.2727

Colors that go with #59999b

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 #59999b

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9b5c59

#599b7d · #59789b

#9b5999 · #999b59

Split-complementary

Open in tool →

#9b5978 · #9b7d59

#7d599b · #9b5c59 · #789b59

Contrast

#59999b as textRatioAAAA largeAAAFix
Aaon white
3.25:1failpassfail
  • AA: use #497d7e as the text (4.65:1)
  • AAA: use #365d5e as the text (7.28:1)
  • AA: or shift the background to #262626 (4.65:1)
Aaon black
6.45:1passpassfail
  • AAA: use #5da0a2 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #59999b 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 #59999b
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 #59999b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/59999b-a2babe-d45990-1f272d-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