Color

#338a5b

#338a5b
hex#338a5b
rgbrgb(51, 138, 91)
hslhsl(148, 46%, 37%)
oklchoklch(0.568 0.111 156.3)
Closest name: seagreen (#2e8b57)Relative luminance 0.1964

Colors that go with #338a5b

Charcoal, Crimson and Royal 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 →

#8a3361

#368a33 · #338a87

#5b338a · #8a5b33

Split-complementary

Open in tool →

#87338a · #8a3336

#33368a · #8a3361 · #8a8733

Contrast

#338a5b as textRatioAAAA largeAAAFix
Aaon white
4.26:1failpassfail
  • AA: use #308257 as the text (4.71:1)
  • AAA: use #246140 as the text (7.35:1)
  • AA: or shift the background to #0d0d0d (4.56:1)
Aaon black
4.93:1passpassfail
  • AAA: use #3ea86f as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #338a5b 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 #338a5b
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 #338a5b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/338a5b-a2beb2-d259d4-1f2d2c-eaf1e9?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