Color

#d50f01

#d50f01
hex#d50f01
rgbrgb(213, 15, 1)
hslhsl(4, 99%, 42%)
oklchoklch(0.552 0.222 29.9)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1449

Colors that go with #d50f01

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#01c7d5

#d5015d · #d57901

#01d50f · #0f01d5

Split-complementary

Open in tool →

#01d579 · #015dd5

#5dd501 · #01c7d5 · #7901d5

Contrast

#d50f01 as textRatioAAAA largeAAAFix
Aaon white
5.39:1passpassfail
  • AAA: use #b20d01 as the text (7.12:1)
Aaon black
3.9:1failpassfail
  • AA: use #e91101 as the text (4.55:1)
  • AAA: use #fe6358 as the text (7.14:1)
  • AA: or shift the background to #ebebeb (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 #d50f01 as the background.

Brands using this color

Fonts for this mood

#d50f01 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d50f01
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 #d50f01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d50f01-c4a39c-62cb9f-2d261f-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