Color

#28289a

#28289a
hex#28289a
rgbrgb(40, 40, 154)
hslhsl(240, 59%, 38%)
oklchoklch(0.367 0.178 273.3)
Closest name: Depths of Night (#2c319b)Relative luminance 0.043

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9a9a28

#28619a · #61289a

#9a2828 · #289a28

Split-complementary

Open in tool →

#9a6128 · #619a28

#9a2861 · #9a9a28 · #289a61

Contrast

#28289a as textRatioAAAA largeAAAFix
Aaon white
11.29:1passpasspassPasses AAA — no fix needed.
Aaon black
1.86:1failfailfail
  • AA: use #6969d8 as the text (4.61:1)
  • AAA: use #8d8de2 as the text (7.04:1)
  • AA: or shift the background to #a6a6a6 (4.64:1)
  • AAA: or shift the background to #cccccc (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28289a 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

#28289a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28289a
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 #28289a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28289a-a19cc4-df994e-251f2d-e9edf1?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