Color

#0a151f

#0a151f
hex#0a151f
rgbrgb(10, 21, 31)
hslhsl(209, 51%, 8%)
oklchoklch(0.191 0.026 247)
Closest name: Midnight Edition (#0c121b)Relative luminance 0.007

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1f140a

#0a1f1e · #0a0a1f

#1f0a15 · #151f0a

Split-complementary

Open in tool →

#1f0a0a · #1f1e0a

#1e0a1f · #1f140a · #0a1f0a

Contrast

#0a151f as textRatioAAAA largeAAAFix
Aaon white
18.42:1passpasspassPasses AAA — no fix needed.
Aaon black
1.14:1failfailfail
  • AA: use #3b7ab5 as the text (4.64:1)
  • AAA: use #659bcd as the text (7.12:1)
  • AA: or shift the background to #808080 (4.66:1)
  • AAA: or shift the background to #a1a1a1 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a151f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0a151f reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a151f
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 #0a151f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a151f-9cacc4-df4e4e-1f212d-e9f1f1?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