Circuit
Open in tool →Violet plus cyan is the current AI-product signal — pair it with pure black type to keep it from going candy.
Color
#100c0a
#100c0a
hex
#100c0argb
rgb(16, 12, 10)hsl
hsl(20, 23%, 5%)oklch
oklch(0.159 0.008 48.2)Closest name: Black Sheep (#0f0d0d)Relative luminance 0.004
Colors that go with #100c0a
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 #100c0a without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #100c0a in 16 real palettes, including Ember and Ahrefs's brand system, as the accent.
Blue #0000ff
shipped20 real palettes, including Robinhood's brand system and Pfizer's brand system put Blue beside #100c0a, as the supporting colour.
Blue Violet #8a2be2
shippedBlue Violet is paired with #100c0a in 10 real palettes, including Render's brand system and Twitch's brand system, as the lead colour.
Brown #a52a2a
shipped4 real palettes, including Velvet and State Farm's brand system put Brown beside #100c0a, as the lead colour.
Burgundy #800020
shipped4 real palettes, including Mailchimp's brand system and Rare Beauty's brand system put Burgundy beside #100c0a, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #100c0a in 4 real palettes, including Velvet and Coffee Bar, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #100c0a: 7 real palettes, including Estate and Diner, as the supporting colour.
Real palettes that use #100c0a
Tints & shades
Harmonies
Contrast
| #100c0a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 19.46:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.08:1 | 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 #100c0a as the background.
Brands using this color
- Asanatext · #0d0d0d · Δ0.81
- Rendertext · #0d0d0d · Δ0.81
- Robinhoodtext · #110e08 · Δ1.052
- Wisetext · #0e0f0c · Δ1.143
- Twitchtext · #0e0e10 · Δ1.241
- Olympicstext · #0d0d10 · Δ1.275
- Lineartext · #0d0e10 · Δ1.295
- Coinbasetext · #0a0b0d · Δ1.533
- Buntext · #0a0a0a · Δ1.611
- Framertext · #0a0a0a · Δ1.611
- MetaMaskprimary · #0a0a0a · Δ1.611
- MetaMasktext · #0a0a0a · Δ1.611
- Pfizerprimary · #0a0a0a · Δ1.611
- Pfizertext · #0a0a0a · Δ1.611
- Foot Lockerprimary · #0e1111 · Δ1.994
- Foot Lockertext · #0e1111 · Δ1.994
- Amazontext · #0f1111 · Δ1.995
Palettes built around it
Neobank
Open in tool →Purple-and-lime is the challenger-bank uniform — high energy, and clearly not a legacy bank.
Streetwear
Open in tool →Black, white, red, yellow — drop-culture signal colors, unmissable at thumbnail size.
Noir Beauty
Open in tool →Black, gold and one deep red — the prestige cosmetics counter: all restraint and a single lipstick.
Ember
Open in tool →Flame orange on charcoal — the sports and energy palette; one accent yellow for stats and highlights.
Velvet
Open in tool →Burgundy and plum on near-black with a brass accent — theatre, wine, and anything that wants to feel after-dark.
Fonts for this mood
#100c0a reads as warm, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #100c0a
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 #100c0a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/100c0a-c4ae9c-62cbbb-2d2a1f-f1e9eb?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