Color

#3a7858

#3a7858
hex#3a7858
rgbrgb(58, 120, 88)
hslhsl(149, 35%, 35%)
oklchoklch(0.522 0.083 159.1)
Closest name: Amazon (#387b54)Relative luminance 0.1504

Colors that go with #3a7858

Charcoal, Medium Violet Red and 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 →

#783a5a

#3b783a · #3a7877

#583a78 · #78583a

Split-complementary

Open in tool →

#773a78 · #783a3b

#3a3b78 · #783a5a · #78773a

Contrast

#3a7858 as textRatioAAAA largeAAAFix
Aaon white
5.24:1passpassfail
  • AAA: use #2e6047 as the text (7.29:1)
Aaon black
4.01:1failpassfail
  • AA: use #3f8360 as the text (4.63:1)
  • AAA: use #51a97b as the text (7.31:1)
  • AA: or shift the background to #f0f0f0 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a7858 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #3a7858
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 #3a7858 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a7858-a2beb3-d459d4-1f2d2c-e9f1e9?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