Color

#284f77

#284f77
hex#284f77
rgbrgb(40, 79, 119)
hslhsl(210, 50%, 31%)
oklchoklch(0.419 0.081 250.8)
Closest name: Assassin (#2d4f83)Relative luminance 0.0737

Tints & shades

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

Harmonies

Complementary

Open in tool →

#774f28

#287777 · #282877

#77284f · #4f7728

Split-complementary

Open in tool →

#772828 · #777728

#772877 · #774f28 · #287728

Contrast

#284f77 as textRatioAAAA largeAAAFix
Aaon white
8.48:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #3c78b4 as the text (4.54:1)
  • AAA: use #6a9ccd as the text (7.25:1)
  • AA: or shift the background to #bdbdbd (4.52:1)
  • AAA: or shift the background to #ebebeb (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #284f77 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

#284f77 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #284f77
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 #284f77 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/284f77-9cabc4-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