Color

#c23405

#c23405
hex#c23405
rgbrgb(194, 52, 5)
hslhsl(15, 95%, 39%)
oklchoklch(0.539 0.185 35.3)
Closest name: Rust (#b7410e)Relative luminance 0.1394

Colors that go with #c23405

Charcoal, Royal Blue and Sea Green 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 #c23405

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0593c2

#c20534 · #c29305

#05c234 · #3405c2

Split-complementary

Open in tool →

#05c293 · #0534c2

#34c205 · #0593c2 · #9305c2

Contrast

#c23405 as textRatioAAAA largeAAAFix
Aaon white
5.54:1passpassfail
  • AAA: use #a42c04 as the text (7.14:1)
Aaon black
3.79:1failpassfail
  • AA: use #db3b06 as the text (4.64:1)
  • AAA: use #fa6938 as the text (7.14:1)
  • AA: or shift the background to #e8e8e8 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #c23405 as the background.

Brands using this color

Fonts for this mood

#c23405 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c23405
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 #c23405 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c23405-c4ab9c-62cbb2-2d291f-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