Color

#284fc3

#284fc3
hex#284fc3
rgbrgb(40, 79, 195)
hslhsl(225, 66%, 46%)
oklchoklch(0.475 0.187 265.4)
Closest name: Denim (#2243b6)Relative luminance 0.0998

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c39c28

#289cc3 · #4f28c3

#c3284f · #4fc328

Split-complementary

Open in tool →

#c34f28 · #9cc328

#c3289c · #c39c28 · #28c34f

Contrast

#284fc3 as textRatioAAAA largeAAAFix
Aaon white
7.01:1passpasspassPasses AAA — no fix needed.
Aaon black
3:1failfailfail
  • AA: use #4d71db as the text (4.7:1)
  • AAA: use #7892e3 as the text (7.02:1)
  • AA: or shift the background to #d1d1d1 (4.59:1)
  • AAA: or shift the background to #ffffff (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #284fc3 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

#284fc3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #284fc3
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 #284fc3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/284fc3-9ca1c4-df754e-221f2d-e9eff1?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