Color

#390bad

#390bad
hex#390bad
rgbrgb(57, 11, 173)
hslhsl(257, 88%, 36%)
oklchoklch(0.373 0.217 280.5)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0413

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7fad0b

#0b2ead · #8a0bad

#ad390b · #0bad39

Split-complementary

Open in tool →

#ad8a0b · #2ead0b

#ad0b2e · #7fad0b · #0bad8a

Contrast

#390bad as textRatioAAAA largeAAAFix
Aaon white
11.51:1passpasspassPasses AAA — no fix needed.
Aaon black
1.83:1failfailfail
  • AA: use #8457f4 as the text (4.65:1)
  • AAA: use #a382f7 as the text (7.09:1)
  • AA: or shift the background to #a3a3a3 (4.56:1)
  • AAA: or shift the background to #cccccc (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 #390bad 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

#390bad reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #390bad
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 #390bad and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/390bad-ac9cc4-dfc24e-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