Color

#123003

#123003
hex#123003
rgbrgb(18, 48, 3)
hslhsl(100, 88%, 10%)
oklchoklch(0.275 0.079 137.2)
Closest name: Dark Serpent (#113311)Relative luminance 0.0225

Tints & shades

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

Harmonies

Complementary

Open in tool →

#210330

#283003 · #03300b

#031230 · #300312

Split-complementary

Open in tool →

#0b0330 · #300328

#032830 · #210330 · #300b03

Contrast

#123003 as textRatioAAAA largeAAAFix
Aaon white
14.48:1passpasspassPasses AAA — no fix needed.
Aaon black
1.45:1failfailfail
  • AA: use #328609 as the text (4.55:1)
  • AAA: use #41ad0b as the text (7.21:1)
  • AA: or shift the background to #919191 (4.6:1)
  • AAA: or shift the background to #b5b5b5 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #123003 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

#123003 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #123003
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 #123003 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/123003-a8bea2-694edf-1f2d21-f0f1e9?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