Color

#09011d

#09011d
hex#09011d
rgbrgb(9, 1, 29)
hslhsl(257, 93%, 6%)
oklchoklch(0.127 0.064 293.1)
Closest name: Obsidian Shard (#060313)Relative luminance 0.0017

Colors that go with #09011d

Charcoal, Royal Blue and Teal 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 →

#151e01

#01071e · #17011e

#1e0901 · #011e09

Split-complementary

Open in tool →

#1e1701 · #071e01

#1e0107 · #151e01 · #011e17

Contrast

#09011d as textRatioAAAA largeAAAFix
Aaon white
20.32:1passpasspassPasses AAA — no fix needed.
Aaon black
1.03:1failfailfail
  • AA: use #8253f9 as the text (4.55:1)
  • AAA: use #a684fb as the text (7.31:1)
  • AA: or shift the background to #787878 (4.6:1)
  • AAA: or shift the background to #999999 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #09011d 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

#09011d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #09011d
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 #09011d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/09011d-ac9cc4-dfc24e-291f2d-e9ebf1?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