Color

#301aff

#301aff
hex#301aff
rgbrgb(48, 26, 255)
hslhsl(246, 100%, 55%)
oklchoklch(0.475 0.298 269.8)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.0859

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e8ff1a

#1a75ff · #a31aff

#ff301a · #1aff30

Split-complementary

Open in tool →

#ffa31a · #75ff1a

#ff1a75 · #e8ff1a · #1affa3

Contrast

#301aff as textRatioAAAA largeAAAFix
Aaon white
7.73:1passpasspassPasses AAA — no fix needed.
Aaon black
2.72:1failfailfail
  • AA: use #6c5cff as the text (4.61:1)
  • AAA: use #9185ff as the text (7:1)
  • AA: or shift the background to #c7c7c7 (4.57:1)
  • AAA: or shift the background to #f5f5f5 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #301aff as the background.

Brands using this color

Fonts for this mood

#301aff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #301aff
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 #301aff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/301aff-a59cc4-dfa74e-271f2d-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