Color

#280288

#280288
hex#280288
rgbrgb(40, 2, 136)
hslhsl(257, 97%, 27%)
oklchoklch(0.307 0.185 279.2)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0227

Tints & shades

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

Harmonies

Complementary

Open in tool →

#628802

#021f88 · #6b0288

#882802 · #028828

Split-complementary

Open in tool →

#886b02 · #1f8802

#88021f · #628802 · #02886b

Contrast

#280288 as textRatioAAAA largeAAAFix
Aaon white
14.44:1passpasspassPasses AAA — no fix needed.
Aaon black
1.45:1failfailfail
  • AA: use #8454fc as the text (4.65:1)
  • AAA: use #a481fd as the text (7.14:1)
  • AA: or shift the background to #919191 (4.58:1)
  • AAA: or shift the background to #b5b5b5 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #280288 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

#280288 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #280288
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 #280288 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280288-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