Color

#10191e

#10191e
hex#10191e
rgbrgb(16, 25, 30)
hslhsl(201, 30%, 9%)
oklchoklch(0.207 0.017 232.9)
Closest name: Black Stallion (#0e191c)Relative luminance 0.009

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1e1510

#101e1c · #10121e

#1e1019 · #191e10

Split-complementary

Open in tool →

#1e1012 · #1e1c10

#1c101e · #1e1510 · #121e10

Contrast

#10191e as textRatioAAAA largeAAAFix
Aaon white
17.8:1passpasspassPasses AAA — no fix needed.
Aaon black
1.18:1failfailfail
  • AA: use #4f7a92 as the text (4.53:1)
  • AAA: use #709bb2 as the text (7.02:1)
  • AA: or shift the background to #808080 (4.51:1)
  • AAA: or shift the background to #a3a3a3 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #10191e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#10191e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #10191e
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 #10191e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/10191e-9cb1c4-df4e62-1f222d-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