Newsprint
Open in tool →Ink-black on warm paper with a single red — the broadsheet hierarchy that lets typography lead.
Color
#737373
#737373
hex
#737373rgb
rgb(115, 115, 115)hsl
hsl(0, 0%, 45%)oklch
oklch(0.556 0 0)Closest name: Bank Vault (#757374)Relative luminance 0.1714
Tints & shades
Harmonies
Contrast
| #737373 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.74:1 | pass | pass | fail |
|
Aaon black | 4.43:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #737373 as the background.
Brands using this color
Palettes built around it
Gallery
Open in tool →Near-monochrome with one burnt-orange highlight — an art director's default because it never competes with the work.
Ink & Paper
Open in tool →Two greys and one ink-blue link color: the palette of a well-set book page.
Graphite
Open in tool →A greyscale system with a single amber — the accent does all the work, so allow one per screen.
Fonts for this mood
#737373 reads as neutral, minimal. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #737373
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 #737373 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/737373-a2beb0-c859d4-1f2d2b-eaf1e9?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