Color

#a63303

#a63303
hex#a63303
rgbrgb(166, 51, 3)
hslhsl(18, 96%, 33%)
oklchoklch(0.489 0.158 37.9)
Closest name: Brick (#a03623)Relative luminance 0.1048

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0374a5

#a50324 · #a58503

#03a534 · #3403a5

Split-complementary

Open in tool →

#03a585 · #0324a5

#24a503 · #0374a5 · #8503a5

Contrast

#a63303 as textRatioAAAA largeAAAFix
Aaon white
6.78:1passpassfail
  • AAA: use #a03203 as the text (7.11:1)
Aaon black
3.1:1failpassfail
  • AA: use #d24204 as the text (4.52:1)
  • AAA: use #fb6728 as the text (7.07:1)
  • AA: or shift the background to #d4d4d4 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a63303 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

#a63303 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a63303
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 #a63303 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a63303-c4ad9c-62cbb8-2d291f-f1e9eb?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