Color

#281e43

#281e43
hex#281e43
rgbrgb(40, 30, 67)
hslhsl(256, 38%, 19%)
oklchoklch(0.267 0.067 293.8)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0178

Colors that go with #281e43

Charcoal, Dark Olive Green and Sea Green 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 →

#39431e

#1e2743 · #3a1e43

#43281e · #1e4328

Split-complementary

Open in tool →

#433a1e · #27431e

#431e27 · #39431e · #1e433a

Contrast

#281e43 as textRatioAAAA largeAAAFix
Aaon white
15.48:1passpasspassPasses AAA — no fix needed.
Aaon black
1.36:1failfailfail
  • AA: use #7e68bb as the text (4.58:1)
  • AAA: use #9f8ecc as the text (7.22:1)
  • AA: or shift the background to #8c8c8c (4.6:1)
  • AAA: or shift the background to #b0b0b0 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281e43 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#281e43 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281e43
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 #281e43 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281e43-ab9cc4-dfbf4e-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