Color

#2f28fb

#2f28fb
hex#2f28fb
rgbrgb(47, 40, 251)
hslhsl(242, 96%, 57%)
oklchoklch(0.48 0.287 269.6)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.0909

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f4fb28

#288afb · #9828fb

#fb2f28 · #28fb2f

Split-complementary

Open in tool →

#fb9828 · #8afb28

#fb288a · #f4fb28 · #28fb98

Contrast

#2f28fb as textRatioAAAA largeAAAFix
Aaon white
7.45:1passpasspassPasses AAA — no fix needed.
Aaon black
2.82:1failfailfail
  • AA: use #645ffc as the text (4.58:1)
  • AAA: use #908cfd as the text (7.36:1)
  • AA: or shift the background to #c9c9c9 (4.5:1)
  • AAA: or shift the background to #fafafa (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f28fb as the background.

Brands using this color

Fonts for this mood

#2f28fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f28fb
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 #2f28fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f28fb-a29cc4-df9e4e-261f2d-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