Color

Eigengrau

#16161d
hex#16161d
rgbrgb(22, 22, 29)
hslhsl(240, 14%, 10%)
oklchoklch(0.203 0.014 285.1)
Relative luminance 0.0083

Colors that go with Eigengrau

Charcoal, Amber 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 →

#1d1d16

#161a1d · #1a161d

#1d1616 · #161d16

Split-complementary

Open in tool →

#1d1a16 · #1a1d16

#1d161a · #1d1d16 · #161d1a

Contrast

Eigengrau as textRatioAAAA largeAAAFix
Aaon white
18:1passpasspassPasses AAA — no fix needed.
Aaon black
1.17:1failfailfail
  • AA: use #737396 as the text (4.62:1)
  • AAA: use #9393ae as the text (7.03:1)
  • AA: or shift the background to #808080 (4.56:1)
  • AAA: or shift the background to #a3a3a3 (7.14:1)

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

Brands using this color

Palettes built around it

Fonts for this mood

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

mcpConnect your agent — build around Eigengrau
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 #16161d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/16161d-a19cc4-df994e-251f2d-e9edf1?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