Color

#12283f

#12283f
hex#12283f
rgbrgb(18, 40, 63)
hslhsl(211, 56%, 16%)
oklchoklch(0.271 0.051 251.2)
Closest name: Eternal Darkness (#1c2841)Relative luminance 0.0201

Tints & shades

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

Harmonies

Complementary

Open in tool →

#402a12

#123f40 · #131240

#401228 · #284012

Split-complementary

Open in tool →

#401312 · #3f4012

#40123f · #402a12 · #124013

Contrast

#12283f as textRatioAAAA largeAAAFix
Aaon white
14.99:1passpasspassPasses AAA — no fix needed.
Aaon black
1.4:1failfailfail
  • AA: use #3678bf as the text (4.6:1)
  • AAA: use #649ad3 as the text (7.1:1)
  • AA: or shift the background to #8f8f8f (4.63:1)
  • AAA: or shift the background to #b3b3b3 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12283f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#12283f reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12283f
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 #12283f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12283f-9cabc4-df534e-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