Color

#281d35

#281d35
hex#281d35
rgbrgb(40, 29, 53)
hslhsl(267, 29%, 16%)
oklchoklch(0.256 0.046 304.4)
Closest name: Black Velvet (#222233)Relative luminance 0.0159

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2a351d

#1d1e35 · #331d35

#35281d · #1d3528

Split-complementary

Open in tool →

#35331d · #1e351d

#351d1e · #2a351d · #1d3533

Contrast

#281d35 as textRatioAAAA largeAAAFix
Aaon white
15.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #8668ac as the text (4.59:1)
  • AAA: use #a38cc0 as the text (7.07:1)
  • AA: or shift the background to #8a8a8a (4.62:1)
  • AAA: or shift the background to #adadad (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281d35 as the background.

Brands using this color

Fonts for this mood

#281d35 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281d35
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 #281d35 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281d35-b39cc4-dfda4e-2c1f2d-e9eaf1?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