Color

#283f67

#283f67
hex#283f67
rgbrgb(40, 63, 103)
hslhsl(218, 44%, 28%)
oklchoklch(0.369 0.075 260.8)
Closest name: Black Turmeric (#2c4364)Relative luminance 0.0499

Tints & shades

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

Harmonies

Complementary

Open in tool →

#675028

#285e67 · #302867

#67283f · #3f6728

Split-complementary

Open in tool →

#673028 · #5e6728

#67285e · #675028 · #286730

Contrast

#283f67 as textRatioAAAA largeAAAFix
Aaon white
10.52:1passpasspassPasses AAA — no fix needed.
Aaon black
2:1failfailfail
  • AA: use #4f76ba as the text (4.63:1)
  • AAA: use #7b98cc as the text (7.21:1)
  • AA: or shift the background to #ababab (4.58:1)
  • AAA: or shift the background to #d4d4d4 (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 #283f67 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

#283f67 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283f67
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 #283f67 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283f67-9ca6c4-df644e-201f2d-e9f0f1?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