Named color

Blue Burst

#309cd0
hex#309cd0
rgbrgb(48, 156, 208)
hslhsl(200, 63%, 50%)
oklchoklch(0.656 0.122 234.5)
Relative luminance 0.2896

Blue Burst on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the curated palettes it appears in and any public brand that adopts it.

Colors that go with Blue Burst

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.

Real palettes that use Blue Burst

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d0652f

#2fd0b5 · #2f4ad0

#d02f9a · #9ad02f

Split-complementary

Open in tool →

#d02f4a · #d0b52f

#b52fd0 · #d0652f · #4ad02f

Contrast

Blue Burst as textRatioAAAA largeAAAFix
Aaon white
3.09:1failpassfail
  • AA: use #267ba6 as the text (4.7:1)
  • AAA: use #1c5d7d as the text (7.21:1)
  • AA: or shift the background to #2b2b2b (4.58:1)
Aaon black
6.79:1passpassfail
  • AAA: use #3ca0d3 as the text (7.16:1)

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

Blue Burst reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around Blue Burst
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 #309cd0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/309cd0-9cb2c4-df4e64-1f232d-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