Color

#151d1e

#151d1e
hex#151d1e
rgbrgb(21, 29, 30)
hslhsl(187, 18%, 10%)
oklchoklch(0.223 0.012 205.7)
Closest name: Coco’s Black (#1c1c1a)Relative luminance 0.0113

Colors that go with #151d1e

Charcoal, Amber and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1e1615

#151e1b · #15181e

#1e151d · #1d1e15

Split-complementary

Open in tool →

#1e1518 · #1e1b15

#1b151e · #1e1615 · #181e15

Contrast

#151d1e as textRatioAAAA largeAAAFix
Aaon white
17.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.23:1failfailfail
  • AA: use #587a7e as the text (4.5:1)
  • AAA: use #789ca1 as the text (7.07:1)
  • AA: or shift the background to #858585 (4.64:1)
  • AAA: or shift the background to #a6a6a6 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151d1e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#151d1e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151d1e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #151d1e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151d1e-a2b8be-df4e83-1f262d-e9f1ee?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