Color

#306397

#306397
hex#306397
rgbrgb(48, 99, 151)
hslhsl(210, 52%, 39%)
oklchoklch(0.49 0.1 251)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1179

Tints & shades

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

Harmonies

Complementary

Open in tool →

#976330

#309797 · #303097

#973063 · #639730

Split-complementary

Open in tool →

#973030 · #979730

#973097 · #976330 · #309730

Contrast

#306397 as textRatioAAAA largeAAAFix
Aaon white
6.26:1passpassfail
  • AAA: use #2b5988 as the text (7.27:1)
Aaon black
3.36:1failpassfail
  • AA: use #3a78b6 as the text (4.54:1)
  • AAA: use #689ccf as the text (7.24:1)
  • AA: or shift the background to #dbdbdb (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #306397 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#306397 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #306397
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #306397 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/306397-9cabc4-df514e-1f202d-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