Color

#491cfd

#491cfd
hex#491cfd
rgbrgb(73, 28, 253)
hslhsl(252, 98%, 55%)
oklchoklch(0.488 0.289 276.1)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.0934

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d0fd1c

#1c5ffd · #b91cfd

#fd491c · #1cfd49

Split-complementary

Open in tool →

#fdb91c · #5ffd1c

#fd1c5f · #d0fd1c · #1cfdb9

Contrast

#491cfd as textRatioAAAA largeAAAFix
Aaon white
7.32:1passpasspassPasses AAA — no fix needed.
Aaon black
2.87:1failfailfail
  • AA: use #7958fd as the text (4.63:1)
  • AAA: use #9e86fe as the text (7.3:1)
  • AA: or shift the background to #cccccc (4.56:1)
  • AAA: or shift the background to #fafafa (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #491cfd 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

#491cfd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #491cfd
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 #491cfd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/491cfd-a99cc4-dfb64e-281f2d-e9ecf1?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