Color

#900604

#900604
hex#900604
rgbrgb(144, 6, 4)
hslhsl(1, 95%, 29%)
oklchoklch(0.413 0.166 29.1)
Closest name: Brick Red (#8f1402)Relative luminance 0.0607

Tints & shades

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

Harmonies

Complementary

Open in tool →

#048e90

#900448 · #904c04

#049006 · #060490

Split-complementary

Open in tool →

#04904c · #044890

#489004 · #048e90 · #4c0490

Contrast

#900604 as textRatioAAAA largeAAAFix
Aaon white
9.49:1passpasspassPasses AAA — no fix needed.
Aaon black
2.21:1failfailfail
  • AA: use #ea0a06 as the text (4.54:1)
  • AAA: use #fb6260 as the text (7.02:1)
  • AA: or shift the background to #b3b3b3 (4.52:1)
  • AAA: or shift the background to #dedede (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #900604 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

#900604 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #900604
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 #900604 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/900604-c4a19c-62cb9a-2d261f-f1e9ed?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