Color

#28008f

#28008f
hex#28008f
rgbrgb(40, 0, 143)
hslhsl(257, 100%, 28%)
oklchoklch(0.315 0.193 278)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0243

Tints & shades

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

Harmonies

Complementary

Open in tool →

#668f00

#001f8f · #70008f

#8f2800 · #008f28

Split-complementary

Open in tool →

#8f7000 · #1f8f00

#8f001f · #668f00 · #008f70

Contrast

#28008f as textRatioAAAA largeAAAFix
Aaon white
14.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.49:1failfailfail
  • AA: use #8352ff as the text (4.62:1)
  • AAA: use #a480ff as the text (7.11:1)
  • AA: or shift the background to #949494 (4.66:1)
  • AAA: or shift the background to #b8b8b8 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28008f 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

#28008f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28008f
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 #28008f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28008f-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