Color

#d40823

#d40823
hex#d40823
rgbrgb(212, 8, 35)
hslhsl(352, 93%, 43%)
oklchoklch(0.55 0.22 25.2)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1429

Colors that go with #d40823

Charcoal, Royal Blue and Steel Blue 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 →

#08d4b8

#d40889 · #d45208

#23d408 · #0823d4

Split-complementary

Open in tool →

#08d452 · #0889d4

#89d408 · #08d4b8 · #5208d4

Contrast

#d40823 as textRatioAAAA largeAAAFix
Aaon white
5.44:1passpassfail
  • AAA: use #b1061d as the text (7.21:1)
Aaon black
3.86:1failpassfail
  • AA: use #ec0927 as the text (4.63:1)
  • AAA: use #f96276 as the text (7.04:1)
  • AA: or shift the background to #ebebeb (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #d40823 as the background.

Brands using this color

Fonts for this mood

#d40823 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d40823
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 #d40823 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d40823-c49c9d-62cb8a-2d231f-f1e9ee?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