Color

#0f53ff

#0f53ff
hex#0f53ff
rgbrgb(15, 83, 255)
hslhsl(223, 100%, 53%)
oklchoklch(0.531 0.261 263.5)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1351

Colors that go with #0f53ff

Charcoal, Crimson and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ffbb0f

#0fcbff · #430fff

#ff0f53 · #53ff0f

Split-complementary

Open in tool →

#ff430f · #cbff0f

#ff0fcb · #ffbb0f · #0fff43

Contrast

#0f53ff as textRatioAAAA largeAAAFix
Aaon white
5.67:1passpassfail
  • AAA: use #0042eb as the text (7.05:1)
Aaon black
3.7:1failpassfail
  • AA: use #2e69ff as the text (4.58:1)
  • AAA: use #6691ff as the text (7.06:1)
  • AA: or shift the background to #e6e6e6 (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 #0f53ff as the background.

Brands using this color

Fonts for this mood

#0f53ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f53ff
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0f53ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f53ff-9ca3c4-df704e-211f2d-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