Color

#ff2937

#ff2937
hex#ff2937
rgbrgb(255, 41, 55)
hslhsl(356, 100%, 58%)
oklchoklch(0.643 0.242 25)
Closest name: red (#ff0000)Relative luminance 0.2312

Tints & shades

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

Harmonies

Complementary

Open in tool →

#29fff1

#ff29a2 · #ff8629

#37ff29 · #2937ff

Split-complementary

Open in tool →

#29ff86 · #29a2ff

#a2ff29 · #29fff1 · #8629ff

Contrast

#ff2937 as textRatioAAAA largeAAAFix
Aaon white
3.73:1failpassfail
  • AA: use #eb0010 as the text (4.63:1)
  • AAA: use #b3000c as the text (7.19:1)
  • AA: or shift the background to #1c1c1c (4.56:1)
Aaon black
5.62:1passpassfail
  • AAA: use #ff616b as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff2937 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#ff2937 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff2937
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 #ff2937 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff2937-c49e9c-62cb91-2d241f-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