Color

#3058cf

#3058cf
hex#3058cf
rgbrgb(48, 88, 207)
hslhsl(225, 62%, 50%)
oklchoklch(0.505 0.19 265.7)
Closest name: Denim (#1560bd)Relative luminance 0.1211

Colors that go with #3058cf

Charcoal, Sea Green 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 →

#cfa730

#30a7cf · #5830cf

#cf3058 · #58cf30

Split-complementary

Open in tool →

#cf5830 · #a7cf30

#cf30a7 · #cfa730 · #30cf58

Contrast

#3058cf as textRatioAAAA largeAAAFix
Aaon white
6.14:1passpassfail
  • AAA: use #2c4fba as the text (7.16:1)
Aaon black
3.42:1failpassfail
  • AA: use #4d6fd5 as the text (4.55:1)
  • AAA: use #7b94e0 as the text (7.15:1)
  • AA: or shift the background to #dedede (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3058cf 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

#3058cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3058cf
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 #3058cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3058cf-9ca1c4-df754e-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