Color

#0f43ff

#0f43ff
hex#0f43ff
rgbrgb(15, 67, 255)
hslhsl(227, 100%, 53%)
oklchoklch(0.507 0.276 264.5)
Closest name: C64 Blue (#003aff)Relative luminance 0.1134

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ffcb0f

#0fbbff · #530fff

#ff0f43 · #43ff0f

Split-complementary

Open in tool →

#ff530f · #bbff0f

#ff0fbb · #ffcb0f · #0fff53

Contrast

#0f43ff as textRatioAAAA largeAAAFix
Aaon white
6.43:1passpassfail
  • AAA: use #0037ff as the text (7.02:1)
Aaon black
3.27:1failpassfail
  • AA: use #3d67ff as the text (4.58:1)
  • AAA: use #708fff as the text (7.06:1)
  • AA: or shift the background to #d9d9d9 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f43ff 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

#0f43ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f43ff
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 #0f43ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f43ff-9ca0c4-df7a4e-221f2d-e9eff1?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