Color

#0307fc

#0307fc
hex#0307fc
rgbrgb(3, 7, 252)
hslhsl(239, 98%, 50%)
oklchoklch(0.451 0.309 264.3)
Closest name: blue (#0000ff)Relative luminance 0.072

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fcf803

#0384fc · #7b03fc

#fc0307 · #07fc03

Split-complementary

Open in tool →

#fc7b03 · #84fc03

#fc0384 · #fcf803 · #03fc7b

Contrast

#0307fc as textRatioAAAA largeAAAFix
Aaon white
8.61:1passpasspassPasses AAA — no fix needed.
Aaon black
2.44:1failfailfail
  • AA: use #5d60fd as the text (4.56:1)
  • AAA: use #8b8dfe as the text (7.34:1)
  • AA: or shift the background to #bdbdbd (4.58:1)
  • AAA: or shift the background to #e8e8e8 (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 #0307fc as the background.

Brands using this color

Fonts for this mood

#0307fc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0307fc
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 #0307fc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0307fc-a09cc4-df964e-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