Color

#455f59

#455f59
hex#455f59
rgbrgb(69, 95, 89)
hslhsl(166, 16%, 32%)
oklchoklch(0.463 0.033 179)
Closest name: Ethereal Woods (#3e5e4e)Relative luminance 0.1017

Colors that go with #455f59

Cadet Blue, Champagne and Copper 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 #455f59

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5f454b

#455f4c · #45585f

#59455f · #5f5945

Split-complementary

Open in tool →

#5f4558 · #5f4c45

#4c455f · #5f454b · #585f45

Contrast

#455f59 as textRatioAAAA largeAAAFix
Aaon white
6.92:1passpassfail
  • AAA: use #425c56 as the text (7.25:1)
Aaon black
3.03:1failpassfail
  • AA: use #5a7c74 as the text (4.57:1)
  • AAA: use #7a9f96 as the text (7.23:1)
  • AA: or shift the background to #d1d1d1 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #455f59 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 #455f59
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 #455f59 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/455f59-a2bebb-d459b1-1f2a2d-e9f1ec?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