Typewriter
Open in tool →Ink-black and ribbon-red on manila — the correspondence palette; all the vintage comes from the paper colour.
Color
#212d30
#212d30
hex
#212d30rgb
rgb(33, 45, 48)hsl
hsl(192, 19%, 16%)oklch
oklch(0.287 0.017 214.7)Closest name: Cinder (#242a2e)Relative luminance 0.0241
Colors that go with #212d30
Amber, Blue and Blue Violet lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Amber #ffbf00
shippedAmber is paired with #212d30 in 18 real palettes, including McDonald's's brand system and Beach Hut, as the lead colour.
Blue #0000ff
shipped23 real palettes, including Readymag's brand system and Headspace's brand system put Blue beside #212d30, as the supporting colour.
Blue Violet #8a2be2
shippedBlue Violet is paired with #212d30 in 5 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour.
Blush Pink #e8b4b8
shipped7 real palettes, including Rain Garden and Graphite Mono put Blush Pink beside #212d30, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #212d30 in 5 real palettes, including Chalkboard and Coastal, as the lead colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #212d30: 10 real palettes, including Clean Beauty and Coastal, as the lead colour.
Champagne #f7e7ce
shipped8 real palettes, including Darkroom and Forest Floor put Champagne beside #212d30, as the surface under it.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #212d30 was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #212d30
Tints & shades
Harmonies
Contrast
| #212d30 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.16:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.48:1 | 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 #212d30 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#212d30 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #212d30
live endpointPoint any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #212d30 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/212d30-a2b5be-df4e77-1f242d-e9f1ef?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