Color

#37010d

#37010d
hex#37010d
rgbrgb(55, 1, 13)
hslhsl(347, 96%, 11%)
oklchoklch(0.216 0.084 14.4)
Closest name: Vienna Roast (#330022)Relative luminance 0.0086

Tints & shades

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

Harmonies

Complementary

Open in tool →

#01372b

#370128 · #371001

#0d3701 · #010d37

Split-complementary

Open in tool →

#013710 · #012837

#283701 · #01372b · #100137

Contrast

#37010d as textRatioAAAA largeAAAFix
Aaon white
17.91:1passpasspassPasses AAA — no fix needed.
Aaon black
1.17:1failfailfail
  • AA: use #eb0537 as the text (4.61:1)
  • AAA: use #fc5f81 as the text (7.09:1)
  • AA: or shift the background to #808080 (4.53:1)
  • AAA: or shift the background to #a3a3a3 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37010d 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

#37010d reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37010d
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 #37010d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37010d-c49ca0-62cb82-2d221f-f1e9ef?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