Color

#00131f

#00131f
hex#00131f
rgbrgb(0, 19, 31)
hslhsl(203, 100%, 6%)
oklchoklch(0.176 0.038 235.7)
Closest name: Midnight Edition (#0c121b)Relative luminance 0.0056

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1f0c00

#001f1b · #00041f

#1f0013 · #131f00

Split-complementary

Open in tool →

#1f0004 · #1f1b00

#1b001f · #1f0c00 · #041f00

Contrast

#00131f as textRatioAAAA largeAAAFix
Aaon white
18.87:1passpasspassPasses AAA — no fix needed.
Aaon black
1.11:1failfailfail
  • AA: use #007bc7 as the text (4.66:1)
  • AAA: use #009afa as the text (7:1)
  • AA: or shift the background to #7d7d7d (4.58:1)
  • AAA: or shift the background to #9e9e9e (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00131f as the background.

Brands using this color

Fonts for this mood

#00131f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00131f
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 #00131f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00131f-9cb0c4-df4e5d-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