Color

#315768

#315768
hex#315768
rgbrgb(49, 87, 104)
hslhsl(199, 36%, 30%)
oklchoklch(0.436 0.052 228.6)
Closest name: Arctic Nights (#345c61)Relative luminance 0.0847

Colors that go with #315768

Cadet Blue, Goldenrod and Medium 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.

Real palettes that use #315768

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#684231

#31685e · #313b68

#683157 · #576831

Split-complementary

Open in tool →

#68313b · #685e31

#5e3168 · #684231 · #3b6831

Contrast

#315768 as textRatioAAAA largeAAAFix
Aaon white
7.8:1passpasspassPasses AAA — no fix needed.
Aaon black
2.69:1failfailfail
  • AA: use #467c95 as the text (4.58:1)
  • AAA: use #669eb7 as the text (7.14:1)
  • AA: or shift the background to #c7c7c7 (4.61:1)
  • AAA: or shift the background to #f5f5f5 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #315768 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

#315768 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #315768
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 #315768 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/315768-9cb3c4-df4e66-1f232d-e9f1f0?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