Ink & Paper
Open in tool →Two greys and one ink-blue link color: the palette of a well-set book page.
Color
#121b21
#121b21
hex
#121b21rgb
rgb(18, 27, 33)hsl
hsl(204, 29%, 10%)oklch
oklch(0.216 0.018 237.8)Closest name: Black Stallion (#0e191c)Relative luminance 0.0102
Colors that go with #121b21
Charcoal, Amber and Blue 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black that reads cleanly against #121b21 without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #121b21 in 18 real palettes, including Warner Bros.'s brand system and Blueprint, as the accent.
Blue #0000ff
shipped24 real palettes, including Signal's brand system and CVS's brand system put Blue beside #121b21, as the supporting colour.
Blue Violet #8a2be2
shippedBlue Violet is paired with #121b21 in 10 real palettes, including Yahoo's brand system and ClickUp's brand system, as the supporting colour.
Blush Pink #e8b4b8
shipped5 real palettes, including Estate and Graphite Mono put Blush Pink beside #121b21, as the accent.
Brown #a52a2a
shipped5 real palettes, including Woodsmoke and State Farm's brand system put Brown beside #121b21, as the accent.
Burgundy #800020
shipped4 real palettes, including Qatar Airways's brand system and Mailchimp's brand system put Burgundy beside #121b21, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #121b21 in 6 real palettes, including Coffee Bar and Kiln, as the accent.
Real palettes that use #121b21
Tints & shades
Harmonies
Contrast
| #121b21 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 17.44:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.2:1 | 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 #121b21 as the background.
Brands using this color
- Vimeotext · #141a20 · Δ0.445
- Philipsprimary · #15191e · Δ0.865
- Philipstext · #15191e · Δ0.865
- Asanasecondary · #151b26 · Δ1.167
- Affirmtext · #101820 · Δ1.193
- Chasetext · #101820 · Δ1.193
- Netlifytext · #181a1c · Δ1.283
- Splinetext · #191a1d · Δ1.32
- Characterprimary · #11181c · Δ1.322
- Charactertext · #11181c · Δ1.322
- JetBrainstext · #19191c · Δ1.454
- Audisecondary · #181d25 · Δ1.477
- Fitbitprimary · #191c1d · Δ1.51
- Fitbittext · #191c1d · Δ1.51
- Airtableaccent · #181d26 · Δ1.579
- Boxtext · #151f26 · Δ1.694
- Hingetext · #1a1a1a · Δ1.777
- Louis Vuittonprimary · #1a1a1a · Δ1.777
- Louis Vuittontext · #1a1a1a · Δ1.777
- Spectrumprimary · #1a1a1a · Δ1.777
- Spectrumtext · #1a1a1a · Δ1.777
- Warner Bros.primary · #1a1a1a · Δ1.777
- Warner Bros.text · #1a1a1a · Δ1.777
- Huaweitext · #191919 · Δ1.791
- Notionprimary · #191919 · Δ1.791
- Pumaprimary · #191919 · Δ1.791
- Pumatext · #191919 · Δ1.791
- Qatar Airwayssecondary · #181825 · Δ1.836
- Logitechprimary · #1b1b1b · Δ1.868
- Logitechtext · #1b1b1b · Δ1.868
- N26text · #1b1b1b · Δ1.868
- NASAtext · #1b1b1b · Δ1.868
- Signalprimary · #1b1b1b · Δ1.868
- Signaltext · #1b1b1b · Δ1.868
- Yahooprimary · #1a1919 · Δ1.898
- Yahootext · #1a1919 · Δ1.898
- CVSprimary · #1a1a19 · Δ1.906
- CVStext · #1a1a19 · Δ1.906
- Braveprimary · #1c1c1d · Δ1.966
- Bravetext · #1c1c1d · Δ1.966
Palettes built around it
Console Light
Open in tool →A sober docs palette: one blue for interactive, one green for success, zinc greys for everything else.
Graphite
Open in tool →A greyscale system with a single amber — the accent does all the work, so allow one per screen.
Indigo SaaS
Open in tool →The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states.
Studio Grey
Open in tool →A pure greyscale with a single electric blue — the portfolio palette that makes work look considered.
Cobalt Pop
Open in tool →One deep cobalt and one hot pink on white — a two-accent system for launches and campaign pages that need punch.
Fireside
Open in tool →Cranberry, pine and brass on a charcoal night — the holiday palette without the clichés, because the surface is cold.
Sapphire & Gold
Open in tool →Deep sapphire and gold with a teal — old-money jewel tones on an ivory ground; heraldic without a crest.
Fonts for this mood
#121b21 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #121b21
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 #121b21 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/121b21-9cafc4-df4e5a-1f222d-e9f1f0?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