Color

#0b48ef

#0b48ef
hex#0b48ef
rgbrgb(11, 72, 239)
hslhsl(224, 91%, 49%)
oklchoklch(0.497 0.254 263.8)
Closest name: C64 Blue (#003aff)Relative luminance 0.1094

Colors that go with #0b48ef

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 →

#efb20b

#0bbaef · #400bef

#ef0b48 · #48ef0b

Split-complementary

Open in tool →

#ef400b · #baef0b

#ef0bba · #efb20b · #0bef40

Contrast

#0b48ef as textRatioAAAA largeAAAFix
Aaon white
6.59:1passpassfail
  • AAA: use #0b45e5 as the text (7.01:1)
Aaon black
3.19:1failpassfail
  • AA: use #376af6 as the text (4.55:1)
  • AAA: use #6d92f8 as the text (7.12:1)
  • AA: or shift the background to #d6d6d6 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b48ef 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

#0b48ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b48ef
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 #0b48ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b48ef-9ca2c4-df724e-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