Color

#151c03

#151c03
hex#151c03
rgbrgb(21, 28, 3)
hslhsl(77, 81%, 6%)
oklchoklch(0.212 0.045 122.8)
Closest name: Nightmare (#112211)Relative luminance 0.01

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0a031c

#1c1603 · #081c03

#03151c · #1c0315

Split-complementary

Open in tool →

#03081c · #16031c

#031c16 · #0a031c · #1c0308

Contrast

#151c03 as textRatioAAAA largeAAAFix
Aaon white
17.51:1passpasspassPasses AAA — no fix needed.
Aaon black
1.2:1failfailfail
  • AA: use #60810e as the text (4.64:1)
  • AAA: use #7ca611 as the text (7.32:1)
  • AA: or shift the background to #828282 (4.56:1)
  • AAA: or shift the background to #a6a6a6 (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 #151c03 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

#151c03 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151c03
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 #151c03 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151c03-b3bea2-4e6bdf-232d1f-f1efe9?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