Color

#283b48

#283b48
hex#283b48
rgbrgb(40, 59, 72)
hslhsl(204, 29%, 22%)
oklchoklch(0.342 0.033 238.9)
Closest name: Astral Nomad (#203943)Relative luminance 0.0405

Tints & shades

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

Harmonies

Complementary

Open in tool →

#483528

#284845 · #282b48

#48283b · #3b4828

Split-complementary

Open in tool →

#48282b · #484528

#452848 · #483528 · #2b4828

Contrast

#283b48 as textRatioAAAA largeAAAFix
Aaon white
11.61:1passpasspassPasses AAA — no fix needed.
Aaon black
1.81:1failfailfail
  • AA: use #517994 as the text (4.51:1)
  • AAA: use #759ab3 as the text (7.03:1)
  • AA: or shift the background to #a3a3a3 (4.6:1)
  • AAA: or shift the background to #c9c9c9 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #283b48 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

#283b48 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283b48
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 #283b48 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283b48-9cafc4-df4e5a-1f222d-e9f1f0?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