Color

#28005c

#28005c
hex#28005c
rgbrgb(40, 0, 92)
hslhsl(266, 100%, 18%)
oklchoklch(0.249 0.139 292.3)
Closest name: Blackmail (#220066)Relative luminance 0.0122

Tints & shades

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

Harmonies

Complementary

Open in tool →

#345c00

#00065c · #56005c

#5c2800 · #005c28

Split-complementary

Open in tool →

#5c5600 · #065c00

#5c0006 · #345c00 · #005c56

Contrast

#28005c as textRatioAAAA largeAAAFix
Aaon white
16.87:1passpasspassPasses AAA — no fix needed.
Aaon black
1.24:1failfailfail
  • AA: use #9747ff as the text (4.66:1)
  • AAA: use #b47aff as the text (7.17:1)
  • AA: or shift the background to #858585 (4.57:1)
  • AAA: or shift the background to #a8a8a8 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28005c 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

#28005c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28005c
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 #28005c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28005c-b29cc4-dfd74e-2b1f2d-e9eaf1?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