Crayon Box
Open in tool →Red, teal and yellow at crayon saturation — joyful, but on white with black type so it stays readable for grown-ups.
Color
#21262b
#21262b
hex
#21262brgb
rgb(33, 38, 43)hsl
hsl(210, 13%, 15%)oklch
oklch(0.266 0.012 248.3)Closest name: Black Pearl (#1e272c)Relative luminance 0.0188
Tints & shades
Harmonies
Contrast
| #21262b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.25:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.38:1 | 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 #21262b as the background.
Brands using this color
- Datadogtext · #212529 · Δ0.431
- Zedtext · #242529 · Δ0.61
- GitHubtext · #1f2328 · Δ1.16
- Cloudflaretext · #262626 · Δ1.217
- Obsidiantext · #262626 · Δ1.217
- Sveltetext · #262626 · Δ1.217
- Retoolprimary · #242424 · Δ1.299
- Readymagtext · #282828 · Δ1.623
- Airbnbtext · #222222 · Δ1.814
- Superhumantext · #292827 · Δ1.843
Palettes built around it
Fonts for this mood
#21262b reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #21262b
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 #21262b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/21262b-9cabc4-df514e-1f202d-e9f1f1?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