Color

#301f47

#301f47
hex#301f47
rgbrgb(48, 31, 71)
hslhsl(266, 39%, 20%)
oklchoklch(0.282 0.073 301.5)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0206

Colors that go with #301f47

Charcoal, Dark Olive Green and Sea Green 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 →

#36471f

#1f2247 · #441f47

#47301f · #1f4730

Split-complementary

Open in tool →

#47441f · #22471f

#471f22 · #36471f · #1f4744

Contrast

#301f47 as textRatioAAAA largeAAAFix
Aaon white
14.87:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #8963bb as the text (4.57:1)
  • AAA: use #a68acc as the text (7.13:1)
  • AA: or shift the background to #8f8f8f (4.6:1)
  • AAA: or shift the background to #b3b3b3 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #301f47 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#301f47 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #301f47
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 #301f47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/301f47-b29cc4-dfd74e-2b1f2d-e9eaf1?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