Color

#15210d

#15210d
hex#15210d
rgbrgb(21, 33, 13)
hslhsl(96, 43%, 9%)
oklchoklch(0.23 0.04 134)
Closest name: Nightmare (#112211)Relative luminance 0.0128

Colors that go with #15210d

Charcoal, Slate Blue and Steel 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.

Real palettes that use #15210d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#190d21

#1f210d · #0d210f

#0d1521 · #210d15

Split-complementary

Open in tool →

#0f0d21 · #210d1f

#0d1f21 · #190d21 · #210f0d

Contrast

#15210d as textRatioAAAA largeAAAFix
Aaon white
16.73:1passpasspassPasses AAA — no fix needed.
Aaon black
1.26:1failfailfail
  • AA: use #548334 as the text (4.67:1)
  • AAA: use #6ba843 as the text (7.31:1)
  • AA: or shift the background to #858585 (4.53:1)
  • AAA: or shift the background to #a8a8a8 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15210d 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

#15210d reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #15210d
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 #15210d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15210d-aabea2-5f4edf-1f2d20-f0f1e9?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