Color

#0999dc

#0999dc
hex#0999dc
rgbrgb(9, 153, 220)
hslhsl(199, 92%, 45%)
oklchoklch(0.649 0.144 238.7)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2801

Colors that go with #0999dc

Charcoal, Orange Red 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 →

#dc4c09

#09dcb6 · #0930dc

#dc0999 · #99dc09

Split-complementary

Open in tool →

#dc0930 · #dcb609

#b609dc · #dc4c09 · #30dc09

Contrast

#0999dc as textRatioAAAA largeAAAFix
Aaon white
3.18:1failpassfail
  • AA: use #087eb5 as the text (4.5:1)
  • AAA: use #065c84 as the text (7.31:1)
  • AA: or shift the background to #292929 (4.57:1)
Aaon black
6.6:1passpassfail
  • AAA: use #0aa0e6 as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0999dc as the background.

Brands using this color

Fonts for this mood

#0999dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0999dc
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 #0999dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0999dc-9cb3c4-df4e66-1f232d-e9f1f0?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