Color

#521858

#521858
hex#521858
rgbrgb(82, 24, 88)
hslhsl(294, 57%, 22%)
oklchoklch(0.332 0.121 323.9)
Closest name: Cosmic Explorer (#551155)Relative luminance 0.0315

Colors that go with #521858

Crimson, Denim and Midnight 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 →

#1f5818

#321858 · #58183e

#585218 · #185852

Split-complementary

Open in tool →

#3e5818 · #185832

#583218 · #1f5818 · #183e58

Contrast

#521858 as textRatioAAAA largeAAAFix
Aaon white
12.88:1passpasspassPasses AAA — no fix needed.
Aaon black
1.63:1failfailfail
  • AA: use #bb3bc9 as the text (4.58:1)
  • AAA: use #ce73d9 as the text (7.08:1)
  • AA: or shift the background to #999999 (4.52:1)
  • AAA: or shift the background to #bfbfbf (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #521858 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#521858 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #521858
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 #521858 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/521858-c19fc0-9fcb62-2d1f29-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