Color

#317d71

#317d71
hex#317d71
rgbrgb(49, 125, 113)
hslhsl(171, 44%, 34%)
oklchoklch(0.539 0.077 181.2)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1651

Colors that go with #317d71

Charcoal, Medium Violet Red and Champagne 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 →

#7d313c

#317d4b · #31627d

#71317d · #7d7131

Split-complementary

Open in tool →

#7d3162 · #7d4b31

#4b317d · #7d313c · #627d31

Contrast

#317d71 as textRatioAAAA largeAAAFix
Aaon white
4.88:1passpassfail
  • AAA: use #255f57 as the text (7.36:1)
Aaon black
4.3:1failpassfail
  • AA: use #328175 as the text (4.53:1)
  • AAA: use #40a596 as the text (7.04:1)
  • AA: or shift the background to #f7f7f7 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #317d71 as the background.

Brands using this color

mcpConnect your agent — build around #317d71
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 #317d71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/317d71-a2bebd-d459a7-1f292d-e9f1ec?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