Color

#284d71

#284d71
hex#284d71
rgbrgb(40, 77, 113)
hslhsl(210, 48%, 30%)
oklchoklch(0.41 0.074 249.5)
Closest name: Bluedgeons (#324c64)Relative luminance 0.0695

Tints & shades

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

Harmonies

Complementary

Open in tool →

#714d28

#287171 · #282871

#71284d · #4d7128

Split-complementary

Open in tool →

#712828 · #717128

#712871 · #714d28 · #287128

Contrast

#284d71 as textRatioAAAA largeAAAFix
Aaon white
8.79:1passpasspassPasses AAA — no fix needed.
Aaon black
2.39:1failfailfail
  • AA: use #3e78b1 as the text (4.53:1)
  • AAA: use #6c9ccb as the text (7.26:1)
  • AA: or shift the background to #bababa (4.53:1)
  • AAA: or shift the background to #e6e6e6 (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 #284d71 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

#284d71 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #284d71
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 #284d71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/284d71-9cabc4-df514e-1f202d-e9f1f1?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