Color

#573758

#573758
hex#573758
rgbrgb(87, 55, 88)
hslhsl(298, 23%, 28%)
oklchoklch(0.388 0.068 325.7)
Closest name: Long Passionate Night (#5b365e)Relative luminance 0.0546

Colors that go with #573758

Teal, Sea Green and 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 →

#385837

#463758 · #583748

#585737 · #375857

Split-complementary

Open in tool →

#485837 · #375846

#584637 · #385837 · #374858

Contrast

#573758 as textRatioAAAA largeAAAFix
Aaon white
10.04:1passpasspassPasses AAA — no fix needed.
Aaon black
2.09:1failfailfail
  • AA: use #9b629d as the text (4.63:1)
  • AAA: use #b388b4 as the text (7.1:1)
  • AA: or shift the background to #b0b0b0 (4.63:1)
  • AAA: or shift the background to #d9d9d9 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #573758 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

Fonts for this mood

#573758 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #573758
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 #573758 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/573758-c19fbe-98cb62-2d1f28-ede9f1?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