Color

#03211e

#03211e
hex#03211e
rgbrgb(3, 33, 30)
hslhsl(174, 83%, 7%)
oklchoklch(0.225 0.036 185.7)
Closest name: Nightmare (#112211)Relative luminance 0.012

Tints & shades

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

Harmonies

Complementary

Open in tool →

#210306

#03210f · #031521

#1e0321 · #211e03

Split-complementary

Open in tool →

#210315 · #210f03

#0f0321 · #210306 · #152103

Contrast

#03211e as textRatioAAAA largeAAAFix
Aaon white
16.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.24:1failfailfail
  • AA: use #0c8377 as the text (4.53:1)
  • AAA: use #10a899 as the text (7.08:1)
  • AA: or shift the background to #858585 (4.59:1)
  • AAA: or shift the background to #a8a8a8 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03211e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#03211e reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03211e
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 #03211e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03211e-a2bebe-d459a1-1f292d-e9f1ed?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