Color

#03210d

#03210d
hex#03210d
rgbrgb(3, 33, 13)
hslhsl(140, 83%, 7%)
oklchoklch(0.219 0.053 151.4)
Closest name: Nightmare (#112211)Relative luminance 0.0114

Tints & shades

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

Harmonies

Complementary

Open in tool →

#210317

#082103 · #03211c

#0d0321 · #210d03

Split-complementary

Open in tool →

#1c0321 · #210308

#030821 · #210317 · #211c03

Contrast

#03210d as textRatioAAAA largeAAAFix
Aaon white
17.11:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #0d8735 as the text (4.53:1)
  • AAA: use #10ad44 as the text (7.08:1)
  • AA: or shift the background to #858585 (4.64:1)
  • AAA: or shift the background to #a6a6a6 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03210d 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

#03210d reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03210d
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 #03210d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03210d-a2beaf-c259d4-1f2d2a-ebf1e9?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