Color

#30587e

#30587e
hex#30587e
rgbrgb(48, 88, 126)
hslhsl(209, 45%, 34%)
oklchoklch(0.449 0.077 248.8)
Closest name: Beyond the Sea (#005784)Relative luminance 0.0911

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7e5530

#307e7c · #30317e

#7e3058 · #587e30

Split-complementary

Open in tool →

#7e3031 · #7e7c30

#7c307e · #7e5530 · #317e30

Contrast

#30587e as textRatioAAAA largeAAAFix
Aaon white
7.44:1passpasspassPasses AAA — no fix needed.
Aaon black
2.82:1failfailfail
  • AA: use #427aae as the text (4.63:1)
  • AAA: use #6b9bc7 as the text (7.14:1)
  • AA: or shift the background to #cccccc (4.63:1)
  • AAA: or shift the background to #fafafa (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #30587e 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

#30587e reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #30587e
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 #30587e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/30587e-9cacc4-df4e4e-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