Color

#010313

#010313
hex#010313
rgbrgb(1, 3, 19)
hslhsl(233, 90%, 4%)
oklchoklch(0.108 0.043 266.6)
Closest name: Obsidian Shard (#060313)Relative luminance 0.0012

Tints & shades

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

Harmonies

Complementary

Open in tool →

#131101

#010c13 · #080113

#130103 · #031301

Split-complementary

Open in tool →

#130801 · #0c1301

#13010c · #131101 · #011308

Contrast

#010313 as textRatioAAAA largeAAAFix
Aaon white
20.51:1passpasspassPasses AAA — no fix needed.
Aaon black
1.02:1failfailfail
  • AA: use #5164f6 as the text (4.5:1)
  • AAA: use #818ff8 as the text (7.22:1)
  • AA: or shift the background to #787878 (4.65:1)
  • AAA: or shift the background to #999999 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #010313 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

#010313 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #010313
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 #010313 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/010313-9c9cc4-df884e-241f2d-e9eef1?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