Chalkboard
Open in tool →Slate green with chalk cream and a coral — nostalgic without being twee.
Color
#1f2d2b
#1f2d2b
hex
#1f2d2brgb
rgb(31, 45, 43)hsl
hsl(171, 18%, 15%)oklch
oklch(0.284 0.019 185.3)Closest name: Cinder (#242a2e)Relative luminance 0.0234
Colors that go with #1f2d2b
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 #1f2d2b 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 #1f2d2b, as the supporting colour.
Blue Violet #8a2be2
shippedBlue Violet is paired with #1f2d2b in 6 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 #1f2d2b, as the accent.
Brown #a52a2a
shipped4 real palettes, including Typewriter and Woodsmoke put Brown beside #1f2d2b, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #1f2d2b in 5 real palettes, including Chalkboard and Coastal, as the lead colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #1f2d2b: 10 real palettes, including Clean Beauty and Coastal, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #1f2d2b was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #1f2d2b
Tints & shades
Harmonies
Contrast
| #1f2d2b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.3:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.47:1 | 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 #1f2d2b as the background.
Brands using this color
Palettes built around it
Typewriter
Open in tool →Ink-black and ribbon-red on manila — the correspondence palette; all the vintage comes from the paper colour.
Still Water
Open in tool →Dusty teal and mist with a sand accent — low chroma, low contrast between colours, high contrast for text: the recipe for calm.
Fonts for this mood
#1f2d2b reads as muted, dark, luxury. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #1f2d2b
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 #1f2d2b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/1f2d2b-a2bebd-d459a7-1f292d-e9f1ec?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