Color

#28058f

#28058f
hex#28058f
rgbrgb(40, 5, 143)
hslhsl(255, 93%, 29%)
oklchoklch(0.318 0.191 277.7)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0254

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6c8f05

#05288f · #6c058f

#8f2805 · #058f28

Split-complementary

Open in tool →

#8f6c05 · #288f05

#8f0528 · #6c8f05 · #058f6c

Contrast

#28058f as textRatioAAAA largeAAAFix
Aaon white
13.92:1passpasspassPasses AAA — no fix needed.
Aaon black
1.51:1failfailfail
  • AA: use #8058f9 as the text (4.68:1)
  • AAA: use #a284fb as the text (7.23:1)
  • AA: or shift the background to #949494 (4.59:1)
  • AAA: or shift the background to #b8b8b8 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28058f 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

#28058f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28058f
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 #28058f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28058f-ab9cc4-dfbd4e-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