Color

#05121f

#05121f
hex#05121f
rgbrgb(5, 18, 31)
hslhsl(210, 72%, 7%)
oklchoklch(0.178 0.033 248.6)
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 →

#1f1205

#051f1f · #05051f

#1f0512 · #121f05

Split-complementary

Open in tool →

#1f0505 · #1f1f05

#1f051f · #1f1205 · #051f05

Contrast

#05121f as textRatioAAAA largeAAAFix
Aaon white
18.87:1passpasspassPasses AAA — no fix needed.
Aaon black
1.11:1failfailfail
  • AA: use #2278ce as the text (4.65:1)
  • AAA: use #549ce3 as the text (7.24:1)
  • 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 #05121f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#05121f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #05121f
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 #05121f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/05121f-9cabc4-df514e-1f202d-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