Color

#170306

#170306
hex#170306
rgbrgb(23, 3, 6)
hslhsl(351, 77%, 5%)
oklchoklch(0.143 0.041 10.9)
Closest name: Dwarf Fortress (#1d0200)Relative luminance 0.0026

Tints & shades

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

Harmonies

Complementary

Open in tool →

#031714

#170310 · #170a03

#061703 · #030617

Split-complementary

Open in tool →

#03170a · #031017

#101703 · #031714 · #0a0317

Contrast

#170306 as textRatioAAAA largeAAAFix
Aaon white
19.96:1passpasspassPasses AAA — no fix needed.
Aaon black
1.05:1failfailfail
  • AA: use #e2223f as the text (4.53:1)
  • AAA: use #ec6f81 as the text (7.16:1)
  • AA: or shift the background to #787878 (4.52:1)
  • AAA: or shift the background to #999999 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #170306 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

#170306 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #170306
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 #170306 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/170306-c49c9e-62cb89-2d231f-f1e9ee?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