Color

#dc0909

#dc0909
hex#dc0909
rgbrgb(220, 9, 9)
hslhsl(0, 92%, 45%)
oklchoklch(0.564 0.228 28.9)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1543

Tints & shades

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

Harmonies

Complementary

Open in tool →

#09dcdc

#dc0973 · #dc7309

#09dc09 · #0909dc

Split-complementary

Open in tool →

#09dc73 · #0973dc

#73dc09 · #09dcdc · #7309dc

Contrast

#dc0909 as textRatioAAAA largeAAAFix
Aaon white
5.14:1passpassfail
  • AAA: use #b00707 as the text (7.29:1)
Aaon black
4.09:1failpassfail
  • AA: use #eb0a0a as the text (4.58:1)
  • AAA: use #f96767 as the text (7.16:1)
  • AA: or shift the background to #f0f0f0 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #dc0909 as the background.

Brands using this color

Fonts for this mood

#dc0909 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #dc0909
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #dc0909 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/dc0909-c4a19c-62cb98-2d251f-f1e9ed?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