Color

#42300a

#42300a
hex#42300a
rgbrgb(66, 48, 10)
hslhsl(41, 74%, 15%)
oklchoklch(0.322 0.058 82.1)
Closest name: Secret Passage (#372a05)Relative luminance 0.0329

Colors that go with #42300a

Charcoal, Royal Blue and Sienna 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 #42300a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0a1c43

#43140a · #38430a

#0a4331 · #310a43

Split-complementary

Open in tool →

#0a3843 · #140a43

#0a4314 · #0a1c43 · #430a38

Contrast

#42300a as textRatioAAAA largeAAAFix
Aaon white
12.66:1passpasspassPasses AAA — no fix needed.
Aaon black
1.66:1failfailfail
  • AA: use #976e17 as the text (4.56:1)
  • AAA: use #c38f1d as the text (7.27:1)
  • AA: or shift the background to #9c9c9c (4.61:1)
  • AAA: or shift the background to #c2c2c2 (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 #42300a 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

#42300a reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42300a
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 #42300a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42300a-c4bc9c-62b6cb-2c2d1f-f1ebe9?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