Color

#2b3c40

#2b3c40
hex#2b3c40
rgbrgb(43, 60, 64)
hslhsl(191, 20%, 21%)
oklchoklch(0.343 0.023 213.8)
Closest name: Sunken Harbour (#1c3d44)Relative luminance 0.0412

Tints & shades

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

Harmonies

Complementary

Open in tool →

#402f2b

#2b4039 · #2b3240

#402b3c · #3c402b

Split-complementary

Open in tool →

#402b32 · #40392b

#392b40 · #402f2b · #32402b

Contrast

#2b3c40 as textRatioAAAA largeAAAFix
Aaon white
11.52:1passpasspassPasses AAA — no fix needed.
Aaon black
1.82:1failfailfail
  • AA: use #587c84 as the text (4.63:1)
  • AAA: use #789da5 as the text (7.16:1)
  • AA: or shift the background to #a3a3a3 (4.57:1)
  • AAA: or shift the background to #cccccc (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b3c40 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

#2b3c40 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b3c40
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 #2b3c40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b3c40-a2b6be-df4e7a-1f252d-e9f1ef?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