Color

#310d23

#310d23
hex#310d23
rgbrgb(49, 13, 35)
hslhsl(323, 58%, 12%)
oklchoklch(0.228 0.066 345.9)
Closest name: Dark Prom Queen (#2b0f2e)Relative luminance 0.0106

Colors that go with #310d23

Charcoal, Rust 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 →

#0d301a

#2c0d30 · #300d11

#23300d · #0d2330

Split-complementary

Open in tool →

#11300d · #0d302c

#302c0d · #0d301a · #0d1130

Contrast

#310d23 as textRatioAAAA largeAAAFix
Aaon white
17.32:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #cb3a93 as the text (4.57:1)
  • AAA: use #da72b2 as the text (7.03:1)
  • AA: or shift the background to #828282 (4.51:1)
  • AAA: or shift the background to #a6a6a6 (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 #310d23 as the background.

Brands using this color

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

Fonts for this mood

#310d23 reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #310d23
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 #310d23 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/310d23-c19fb0-6dcb62-2d1f22-f0e9f1?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