Color

#03040c

#03040c
hex#03040c
rgbrgb(3, 4, 12)
hslhsl(233, 60%, 3%)
oklchoklch(0.111 0.023 273.9)
Closest name: Eight Ball (#03050a)Relative luminance 0.0013

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0c0b03

#03090c · #07030c

#0c0304 · #040c03

Split-complementary

Open in tool →

#0c0703 · #090c03

#0c0309 · #0c0b03 · #030c07

Contrast

#03040c as textRatioAAAA largeAAAFix
Aaon white
20.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.03:1failfailfail
  • AA: use #606ed7 as the text (4.71:1)
  • AAA: use #858fe0 as the text (7:1)
  • AA: or shift the background to #787878 (4.63:1)
  • AAA: or shift the background to #999999 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03040c 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

#03040c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03040c
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 #03040c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03040c-9c9cc4-df884e-241f2d-e9eef1?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