Color

#451503

#451503
hex#451503
rgbrgb(69, 21, 3)
hslhsl(16, 92%, 14%)
oklchoklch(0.271 0.079 40.1)
Closest name: Black Chocolate (#441100)Relative luminance 0.0181

Colors that go with #451503

Charcoal, Crimson and Denim 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 →

#033345

#450312 · #453503

#034514 · #140345

Split-complementary

Open in tool →

#034535 · #031245

#124503 · #033345 · #350345

Contrast

#451503 as textRatioAAAA largeAAAFix
Aaon white
15.42:1passpasspassPasses AAA — no fix needed.
Aaon black
1.36:1failfailfail
  • AA: use #d74009 as the text (4.63:1)
  • AAA: use #f76a36 as the text (7.07:1)
  • AA: or shift the background to #8c8c8c (4.59:1)
  • AAA: or shift the background to #b0b0b0 (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 #451503 as the background.

Brands using this color

Fonts for this mood

#451503 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #451503
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 #451503 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/451503-c4ab9c-62cbb4-2d291f-f1e9eb?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