Color

#281d4e

#281d4e
hex#281d4e
rgbrgb(40, 29, 78)
hslhsl(253, 46%, 21%)
oklchoklch(0.274 0.086 289.8)
Closest name: Azulado (#211d49)Relative luminance 0.0188

Colors that go with #281d4e

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 →

#444e1d

#1d2b4e · #401d4e

#4e281d · #1d4e28

Split-complementary

Open in tool →

#4e401d · #2b4e1d

#4e1d2b · #444e1d · #1d4e40

Contrast

#281d4e as textRatioAAAA largeAAAFix
Aaon white
15.26:1passpasspassPasses AAA — no fix needed.
Aaon black
1.38:1failfailfail
  • AA: use #7b66c7 as the text (4.57:1)
  • AAA: use #9b8cd4 as the text (7.1:1)
  • AA: or shift the background to #8c8c8c (4.54:1)
  • AAA: or shift the background to #b0b0b0 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281d4e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#281d4e reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281d4e
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 #281d4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281d4e-a99cc4-dfb84e-281f2d-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