Color

#3000b3

#3000b3
hex#3000b3
rgbrgb(48, 0, 179)
hslhsl(256, 100%, 35%)
oklchoklch(0.368 0.229 276.2)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0388

Tints & shades

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

Harmonies

Complementary

Open in tool →

#83b300

#002ab3 · #8900b3

#b33000 · #00b330

Split-complementary

Open in tool →

#b38900 · #2ab300

#b3002a · #83b300 · #00b389

Contrast

#3000b3 as textRatioAAAA largeAAAFix
Aaon white
11.82:1passpasspassPasses AAA — no fix needed.
Aaon black
1.78:1failfailfail
  • AA: use #8052ff as the text (4.57:1)
  • AAA: use #a280ff as the text (7.07:1)
  • AA: or shift the background to #a1a1a1 (4.58:1)
  • AAA: or shift the background to #c9c9c9 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3000b3 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

#3000b3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3000b3
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 #3000b3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3000b3-ab9cc4-dfbf4e-291f2d-e9ebf1?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