Color

#0a291b

#0a291b
hex#0a291b
rgbrgb(10, 41, 27)
hslhsl(153, 61%, 10%)
oklchoklch(0.253 0.045 160.8)
Closest name: Nightmare (#112211)Relative luminance 0.0173

Tints & shades

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

Harmonies

Complementary

Open in tool →

#290a18

#0a290c · #0a2729

#1b0a29 · #291b0a

Split-complementary

Open in tool →

#290a27 · #290c0a

#0c0a29 · #290a18 · #27290a

Contrast

#0a291b as textRatioAAAA largeAAAFix
Aaon white
15.6:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #218759 as the text (4.67:1)
  • AAA: use #2aac72 as the text (7.24:1)
  • AA: or shift the background to #8a8a8a (4.52:1)
  • AAA: or shift the background to #b0b0b0 (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 #0a291b 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

#0a291b reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a291b
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 #0a291b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a291b-a2beb5-d459cc-1f2d2d-e9f1ea?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