Color

#351f47

#351f47
hex#351f47
rgbrgb(53, 31, 71)
hslhsl(273, 39%, 20%)
oklchoklch(0.288 0.075 307.8)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0219

Colors that go with #351f47

Charcoal, Dark Olive Green and Sienna 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 →

#31471f

#211f47 · #471f45

#47351f · #1f4735

Split-complementary

Open in tool →

#45471f · #1f4721

#47211f · #31471f · #1f4547

Contrast

#351f47 as textRatioAAAA largeAAAFix
Aaon white
14.6:1passpasspassPasses AAA — no fix needed.
Aaon black
1.44:1failfailfail
  • AA: use #915fb9 as the text (4.54:1)
  • AAA: use #ac86ca as the text (7.02:1)
  • AA: or shift the background to #8f8f8f (4.51:1)
  • AAA: or shift the background to #b5b5b5 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #351f47 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

#351f47 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #351f47
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 #351f47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/351f47-b79cc4-c4cb62-2d1f2d-eae9f1?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