Color

#d50b23

#d50b23
hex#d50b23
rgbrgb(213, 11, 35)
hslhsl(353, 90%, 44%)
oklchoklch(0.553 0.22 25.4)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1451

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0bd5be

#d50b88 · #d5590b

#23d50b · #0b23d5

Split-complementary

Open in tool →

#0bd559 · #0b88d5

#88d50b · #0bd5be · #590bd5

Contrast

#d50b23 as textRatioAAAA largeAAAFix
Aaon white
5.38:1passpassfail
  • AAA: use #b3091d as the text (7.06:1)
Aaon black
3.9:1failpassfail
  • AA: use #e90c26 as the text (4.55:1)
  • AAA: use #f76475 as the text (7.03:1)
  • 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 #d50b23 as the background.

Brands using this color

Fonts for this mood

#d50b23 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d50b23
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 #d50b23 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d50b23-c49c9c-62cb8c-2d241f-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