Color

#d3030e

#d3030e
hex#d3030e
rgbrgb(211, 3, 14)
hslhsl(357, 97%, 42%)
oklchoklch(0.546 0.222 28.2)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1395

Tints & shades

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

Harmonies

Complementary

Open in tool →

#03d3c9

#d30375 · #d36103

#0ed303 · #030ed3

Split-complementary

Open in tool →

#03d361 · #0375d3

#75d303 · #03d3c9 · #6103d3

Contrast

#d3030e as textRatioAAAA largeAAAFix
Aaon white
5.54:1passpassfail
  • AAA: use #b5030c as the text (7.04:1)
Aaon black
3.79:1failpassfail
  • AA: use #ec040f as the text (4.59:1)
  • AAA: use #fd636b as the text (7.17:1)
  • AA: or shift the background to #e8e8e8 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #d3030e as the background.

Brands using this color

Fonts for this mood

#d3030e reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d3030e
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 #d3030e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d3030e-c49f9c-62cb93-2d251f-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