Color

#152828

#152828
hex#152828
rgbrgb(21, 40, 40)
hslhsl(180, 31%, 12%)
oklchoklch(0.261 0.025 195.7)
Closest name: Black Box (#0f282f)Relative luminance 0.0183

Tints & shades

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

Harmonies

Complementary

Open in tool →

#281515

#15281f · #151f28

#281528 · #282815

Split-complementary

Open in tool →

#28151f · #281f15

#1f1528 · #281515 · #1f2815

Contrast

#152828 as textRatioAAAA largeAAAFix
Aaon white
15.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.37:1failfailfail
  • AA: use #437f7f as the text (4.58:1)
  • AAA: use #56a4a4 as the text (7.24:1)
  • AA: or shift the background to #8c8c8c (4.57:1)
  • AAA: or shift the background to #b0b0b0 (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 #152828 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#152828 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #152828
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 #152828 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/152828-a2bbbe-d45994-1f272d-e9f1ed?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