Color

#ff052b

#ff052b
hex#ff052b
rgbrgb(255, 5, 43)
hslhsl(351, 100%, 51%)
oklchoklch(0.631 0.255 25.2)
Closest name: red (#ff0000)Relative luminance 0.2154

Tints & shades

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

Harmonies

Complementary

Open in tool →

#05ffda

#ff05a8 · #ff5d05

#2bff05 · #052bff

Split-complementary

Open in tool →

#05ff5d · #05a8ff

#a8ff05 · #05ffda · #5d05ff

Contrast

#ff052b as textRatioAAAA largeAAAFix
Aaon white
3.96:1failpassfail
  • AA: use #eb0023 as the text (4.61:1)
  • AAA: use #b3001b as the text (7.16:1)
  • AA: or shift the background to #171717 (4.53:1)
Aaon black
5.31:1passpassfail
  • AAA: use #ff5c74 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff052b as the background.

Brands using this color

Fonts for this mood

#ff052b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff052b
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 #ff052b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff052b-c49c9e-62cb89-2d231f-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