Color

#39042b

#39042b
hex#39042b
rgbrgb(57, 4, 43)
hslhsl(316, 87%, 12%)
oklchoklch(0.237 0.094 341.4)
Closest name: Dark Sanctuary (#3f012c)Relative luminance 0.0113

Tints & shades

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

Harmonies

Complementary

Open in tool →

#043912

#2d0439 · #390410

#2b3904 · #042b39

Split-complementary

Open in tool →

#103904 · #04392d

#392d04 · #043912 · #041039

Contrast

#39042b as textRatioAAAA largeAAAFix
Aaon white
17.13:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #db0fa5 as the text (4.62:1)
  • AAA: use #f358ca as the text (7.06:1)
  • AA: or shift the background to #858585 (4.64:1)
  • AAA: or shift the background to #a6a6a6 (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 #39042b 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

#39042b reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #39042b
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 #39042b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/39042b-c19fb4-79cb62-2d1f23-efe9f1?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