Color

#00151f

#00151f
hex#00151f
rgbrgb(0, 21, 31)
hslhsl(199, 100%, 6%)
oklchoklch(0.183 0.036 229.3)
Closest name: Midnight Edition (#0c121b)Relative luminance 0.0064

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1f0a00

#001f19 · #00061f

#1f0015 · #151f00

Split-complementary

Open in tool →

#1f0006 · #1f1900

#19001f · #1f0a00 · #061f00

Contrast

#00151f as textRatioAAAA largeAAAFix
Aaon white
18.63:1passpasspassPasses AAA — no fix needed.
Aaon black
1.13:1failfailfail
  • AA: use #007db8 as the text (4.63:1)
  • AAA: use #00a0eb as the text (7.23:1)
  • AA: or shift the background to #7d7d7d (4.53:1)
  • AAA: or shift the background to #a1a1a1 (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00151f as the background.

Brands using this color

Fonts for this mood

#00151f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00151f
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 #00151f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00151f-9cb3c4-df4e66-1f232d-e9f1f0?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