Color

#306a97

#306a97
hex#306a97
rgbrgb(48, 106, 151)
hslhsl(206, 52%, 39%)
oklchoklch(0.507 0.094 244.7)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1317

Colors that go with #306a97

Charcoal, Royal Blue and Rust 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 →

#975d30

#309790 · #303797

#97306a · #6a9730

Split-complementary

Open in tool →

#973037 · #979030

#903097 · #975d30 · #379730

Contrast

#306a97 as textRatioAAAA largeAAAFix
Aaon white
5.78:1passpassfail
  • AAA: use #2a5d84 as the text (7.01:1)
Aaon black
3.63:1failpassfail
  • AA: use #377bae as the text (4.61:1)
  • AAA: use #5c9bcc as the text (7.02:1)
  • AA: or shift the background to #e3e3e3 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #306a97 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#306a97 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #306a97
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 #306a97 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/306a97-9caec4-df4e56-1f212d-e9f1f1?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