Color

#5901b2

#5901b2
hex#5901b2
rgbrgb(89, 1, 178)
hslhsl(270, 99%, 35%)
oklchoklch(0.407 0.224 294.7)
Closest name: Intergalactic Settlement (#5b1e8b)Relative luminance 0.0536

Tints & shades

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

Harmonies

Complementary

Open in tool →

#59b201

#0101b2 · #b201b2

#b25901 · #01b259

Split-complementary

Open in tool →

#b2b201 · #01b201

#b20101 · #59b201 · #01b2b2

Contrast

#5901b2 as textRatioAAAA largeAAAFix
Aaon white
10.14:1passpasspassPasses AAA — no fix needed.
Aaon black
2.07:1failfailfail
  • AA: use #9e3efe as the text (4.57:1)
  • AAA: use #ba76fe as the text (7.11:1)
  • AA: or shift the background to #adadad (4.52:1)
  • AAA: or shift the background to #d9d9d9 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5901b2 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

#5901b2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5901b2
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 #5901b2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5901b2-b59cc4-c9cb62-2c1f2d-eae9f1?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