Tabloid
Open in tool →Red, black and yellow on white is the loudest three-color system in print — use it when headlines are the product.
Color
#15100f
#15100f
hex
#15100frgb
rgb(21, 16, 15)hsl
hsl(10, 17%, 7%)oklch
oklch(0.179 0.009 31.2)Closest name: Sinister (#12110e)Relative luminance 0.0056
Tints & shades
Harmonies
Contrast
| #15100f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 18.87:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.11:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15100f as the background.
Brands using this color
- American Expresstext · #111111 · Δ0.879
- Behancetext · #111111 · Δ0.879
- Calmtext · #111111 · Δ0.879
- Intercomtext · #111111 · Δ0.879
- Klarna UStext · #111111 · Δ0.879
- Mirotext · #111111 · Δ0.879
- Paddletext · #111111 · Δ0.879
- PayPaltext · #111111 · Δ0.879
- Plaidtext · #111111 · Δ0.879
- PostHogtext · #111111 · Δ0.879
- Reddittext · #111111 · Δ0.879
- Remixtext · #111111 · Δ0.879
- Replittext · #111111 · Δ0.879
- Verceltext · #111111 · Δ0.879
- Anthropictext · #141413 · Δ1.455
- Runwayprimary · #141414 · Δ1.505
- Lemon Squeezytext · #121217 · Δ1.604
- Wisetext · #0e0f0c · Δ1.687
- Robinhoodtext · #110e08 · Δ1.73
- Twitchtext · #0e0e10 · Δ1.777
- Retooltext · #151515 · Δ1.889
- Lineartext · #0d0e10 · Δ1.953
Palettes built around it
Neobank
Open in tool →Purple-and-lime is the challenger-bank uniform — high energy, and clearly not a legacy bank.
Atelier
Open in tool →Black on bone with a whisper of gold: the runway default that lets garments carry the color.
Ember
Open in tool →Flame orange on charcoal — the sports and energy palette; one accent yellow for stats and highlights.
Fonts for this mood
#15100f reads as warm, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #15100f
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #15100f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/15100f-c4a79c-62cbaa-2d281f-f1e9ec?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md