Color

#030311

#030311
hex#030311
rgbrgb(3, 3, 17)
hslhsl(240, 70%, 4%)
oklchoklch(0.111 0.037 278.5)
Closest name: Obsidian Shard (#060313)Relative luminance 0.0012

Tints & shades

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

Harmonies

Complementary

Open in tool →

#111103

#030a11 · #0a0311

#110303 · #031103

Split-complementary

Open in tool →

#110a03 · #0a1103

#11030a · #111103 · #03110a

Contrast

#030311 as textRatioAAAA largeAAAFix
Aaon white
20.49:1passpasspassPasses AAA — no fix needed.
Aaon black
1.02:1failfailfail
  • AA: use #6767e4 as the text (4.64:1)
  • AAA: use #8e8eeb as the text (7.22:1)
  • AA: or shift the background to #787878 (4.64:1)
  • AAA: or shift the background to #999999 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #030311 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

#030311 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030311
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 #030311 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030311-a19cc4-df994e-251f2d-e9edf1?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