Color

#281f3d

#281f3d
hex#281f3d
rgbrgb(40, 31, 61)
hslhsl(258, 33%, 18%)
oklchoklch(0.265 0.055 296.2)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0177

Tints & shades

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

Harmonies

Complementary

Open in tool →

#343d1f

#1f253d · #371f3d

#3d281f · #1f3d28

Split-complementary

Open in tool →

#3d371f · #253d1f

#3d1f25 · #343d1f · #1f3d37

Contrast

#281f3d as textRatioAAAA largeAAAFix
Aaon white
15.51:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #806ab4 as the text (4.64:1)
  • AAA: use #a08fc7 as the text (7.25:1)
  • AA: or shift the background to #8c8c8c (4.61:1)
  • AAA: or shift the background to #b0b0b0 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281f3d as the background.

Brands using this color

Fonts for this mood

#281f3d reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281f3d
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 #281f3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281f3d-ad9cc4-dfc44e-291f2d-e9ebf1?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