Color

#151e28

#151e28
hex#151e28
rgbrgb(21, 30, 40)
hslhsl(212, 31%, 12%)
oklchoklch(0.231 0.023 251.5)
Closest name: Night Demons (#201b20)Relative luminance 0.0124

Tints & shades

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

Harmonies

Complementary

Open in tool →

#281f15

#152728 · #161528

#28151e · #1e2815

Split-complementary

Open in tool →

#281615 · #272815

#281527 · #281f15 · #152816

Contrast

#151e28 as textRatioAAAA largeAAAFix
Aaon white
16.82:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #5478a0 as the text (4.57:1)
  • AAA: use #7d99ba as the text (7.14:1)
  • AA: or shift the background to #858585 (4.56:1)
  • AAA: or shift the background to #a8a8a8 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151e28 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#151e28 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151e28
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 #151e28 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151e28-9caac4-df564e-1f202d-e9f1f1?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