Color

#283f95

#283f95
hex#283f95
rgbrgb(40, 63, 149)
hslhsl(227, 58%, 37%)
oklchoklch(0.404 0.144 268)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0618

Tints & shades

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

Harmonies

Complementary

Open in tool →

#957d28

#287695 · #472895

#95283f · #3f9528

Split-complementary

Open in tool →

#954728 · #769528

#952876 · #957d28 · #289547

Contrast

#283f95 as textRatioAAAA largeAAAFix
Aaon white
9.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.24:1failfailfail
  • AA: use #5671d2 as the text (4.69:1)
  • AAA: use #7e93dd as the text (7.1:1)
  • AA: or shift the background to #b5b5b5 (4.58:1)
  • AAA: or shift the background to #e0e0e0 (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 #283f95 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

#283f95 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283f95
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 #283f95 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283f95-9ca0c4-df7a4e-221f2d-e9eff1?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