Color

#2828fb

#2828fb
hex#2828fb
rgbrgb(40, 40, 251)
hslhsl(240, 96%, 57%)
oklchoklch(0.477 0.289 268.3)
Closest name: C64 Blue (#003aff)Relative luminance 0.0893

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbfb28

#2891fb · #9128fb

#fb2828 · #28fb28

Split-complementary

Open in tool →

#fb9128 · #91fb28

#fb2891 · #fbfb28 · #28fb91

Contrast

#2828fb as textRatioAAAA largeAAAFix
Aaon white
7.54:1passpasspassPasses AAA — no fix needed.
Aaon black
2.79:1failfailfail
  • AA: use #5f5ffc as the text (4.53:1)
  • AAA: use #8c8cfd as the text (7.28:1)
  • AA: or shift the background to #c9c9c9 (4.55:1)
  • AAA: or shift the background to #f7f7f7 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2828fb as the background.

Brands using this color

Fonts for this mood

#2828fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2828fb
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 #2828fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2828fb-a19cc4-df994e-251f2d-e9edf1?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