Color

#18031c

#18031c
hex#18031c
rgbrgb(24, 3, 28)
hslhsl(290, 81%, 6%)
oklchoklch(0.159 0.06 321.5)
Closest name: Crow (#180614)Relative luminance 0.0034

Tints & shades

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

Harmonies

Complementary

Open in tool →

#071c03

#0b031c · #1c0313

#1c1803 · #031c18

Split-complementary

Open in tool →

#131c03 · #031c0b

#1c0b03 · #071c03 · #03131c

Contrast

#18031c as textRatioAAAA largeAAAFix
Aaon white
19.65:1passpasspassPasses AAA — no fix needed.
Aaon black
1.07:1failfailfail
  • AA: use #c418e7 as the text (4.63:1)
  • AAA: use #d867ef as the text (7.11:1)
  • AA: or shift the background to #7a7a7a (4.58:1)
  • AAA: or shift the background to #9c9c9c (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18031c 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

#18031c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18031c
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 #18031c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18031c-bf9fc1-a6cb62-2d1f29-ece9f1?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