Color

#378181

#378181
hex#378181
rgbrgb(55, 129, 129)
hslhsl(180, 40%, 36%)
oklchoklch(0.557 0.073 195.3)
Closest name: Emerald Whispers (#2b8478)Relative luminance 0.181

Tints & shades

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

Harmonies

Complementary

Open in tool →

#813737

#37815c · #375c81

#813781 · #818137

Split-complementary

Open in tool →

#81375c · #815c37

#5c3781 · #813737 · #5c8137

Contrast

#378181 as textRatioAAAA largeAAAFix
Aaon white
4.55:1passpassfail
  • AAA: use #296060 as the text (7.15:1)
Aaon black
4.62:1passpassfail
  • AAA: use #46a4a4 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #378181 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

#378181 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #378181
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #378181 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/378181-a2bbbe-d45994-1f272d-e9f1ed?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