Color

#3d615d

#3d615d
hex#3d615d
rgbrgb(61, 97, 93)
hslhsl(173, 23%, 31%)
oklchoklch(0.464 0.042 187)
Closest name: Arctic Nights (#345c61)Relative luminance 0.1033

Colors that go with #3d615d

Cadet Blue, Champagne and Copper 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 #3d615d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#613d41

#3d614b · #3d5361

#5d3d61 · #615d3d

Split-complementary

Open in tool →

#613d53 · #614b3d

#4b3d61 · #613d41 · #53613d

Contrast

#3d615d as textRatioAAAA largeAAAFix
Aaon white
6.85:1passpassfail
  • AAA: use #3b5e5a as the text (7.16:1)
Aaon black
3.07:1failpassfail
  • AA: use #4f7d78 as the text (4.54:1)
  • AAA: use #68a19a as the text (7.15:1)
  • AA: or shift the background to #d4d4d4 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d615d 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

mcpConnect your agent — build around #3d615d
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 #3d615d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d615d-a2bebe-d459a3-1f292d-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