Color

#31394e

#31394e
hex#31394e
rgbrgb(49, 57, 78)
hslhsl(223, 23%, 25%)
oklchoklch(0.347 0.038 268.2)
Closest name: After Midnight (#38393f)Relative luminance 0.0413

Colors that go with #31394e

Dark Olive Green, Sea Green and Steel Blue 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 →

#4e4631

#31484e · #37314e

#4e3139 · #394e31

Split-complementary

Open in tool →

#4e3731 · #484e31

#4e3148 · #4e4631 · #314e37

Contrast

#31394e as textRatioAAAA largeAAAFix
Aaon white
11.5:1passpasspassPasses AAA — no fix needed.
Aaon black
1.83:1failfailfail
  • AA: use #65769f as the text (4.65:1)
  • AAA: use #8b97b6 as the text (7.2:1)
  • AA: or shift the background to #a3a3a3 (4.56:1)
  • AAA: or shift the background to #cccccc (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #31394e 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

#31394e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #31394e
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 #31394e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31394e-9ca3c4-df704e-211f2d-e9eff1?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