Color

#3a4e50

#3a4e50
hex#3a4e50
rgbrgb(58, 78, 80)
hslhsl(185, 16%, 27%)
oklchoklch(0.408 0.025 203.9)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0693

Tints & shades

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

Harmonies

Complementary

Open in tool →

#503c3a

#3a5047 · #3a4350

#503a4e · #4e503a

Split-complementary

Open in tool →

#503a43 · #50473a

#473a50 · #503c3a · #43503a

Contrast

#3a4e50 as textRatioAAAA largeAAAFix
Aaon white
8.8:1passpasspassPasses AAA — no fix needed.
Aaon black
2.39:1failfailfail
  • AA: use #5c7c7f as the text (4.64:1)
  • AAA: use #7a9c9f as the text (7.08:1)
  • AA: or shift the background to #bababa (4.54:1)
  • AAA: or shift the background to #e6e6e6 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a4e50 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

#3a4e50 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a4e50
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 #3a4e50 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a4e50-a2b8be-df4e88-1f262d-e9f1ee?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