Color

#0d30f8

#0d30f8
hex#0d30f8
rgbrgb(13, 48, 248)
hslhsl(231, 94%, 51%)
oklchoklch(0.475 0.285 264.9)
Closest name: C64 Blue (#003aff)Relative luminance 0.0898

Colors that go with #0d30f8

Charcoal, Crimson and Cobalt Blue 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 →

#f8d40d

#0da5f8 · #5f0df8

#f80d30 · #30f80d

Split-complementary

Open in tool →

#f85f0d · #a5f80d

#f80da5 · #f8d40d · #0df85f

Contrast

#0d30f8 as textRatioAAAA largeAAAFix
Aaon white
7.51:1passpasspassPasses AAA — no fix needed.
Aaon black
2.8:1failfailfail
  • AA: use #4d67f9 as the text (4.62:1)
  • AAA: use #798dfb as the text (7.02:1)
  • AA: or shift the background to #c9c9c9 (4.54:1)
  • AAA: or shift the background to #f7f7f7 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0d30f8 as the background.

Brands using this color

Fonts for this mood

#0d30f8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d30f8
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 #0d30f8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d30f8-9c9ec4-df834e-231f2d-e9eef1?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