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
#04090b
#04090b
hex
#04090brgb
rgb(4, 9, 11)hsl
hsl(197, 47%, 3%)oklch
oklch(0.134 0.011 219.1)Closest name: Black Metal (#060606)Relative luminance 0.0025
Colors that go with #04090b
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 #04090b without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #04090b in 14 real palettes, including Ahrefs's brand system and Mastodon hosted on mastodon.social's brand system, as the supporting colour.
Blue #0000ff
shipped18 real palettes, including Pfizer's brand system and Glossier's brand system put Blue beside #04090b, as the supporting colour.
Blue Violet #8a2be2
shippedBlue Violet is paired with #04090b in 10 real palettes, including Circuit and Render's brand system, as the lead colour.
Brown #a52a2a
shipped4 real palettes, including Velvet and State Farm's brand system put Brown beside #04090b, as the lead colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #04090b: 5 real palettes, including Estate and Arctic, as the supporting colour.
Champagne #f7e7ce
shipped8 real palettes, including Midnight Luxe and Sweetgreen's brand system put Champagne beside #04090b, as the text colour against it.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #04090b: 11 real palettes, including Oreo's brand system and Behance's brand system, as the lead colour.
Real palettes that use #04090b
Tints & shades
Harmonies
Contrast
| #04090b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 20.02:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.05:1 | 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 #04090b as the background.
Brands using this color
- Webflowtext · #080808 · Δ1.144
- M&M'sprimary · #040607 · Δ1.568
- M&M'stext · #040607 · Δ1.568
- Buntext · #0a0a0a · Δ1.579
- Framertext · #0a0a0a · Δ1.579
- MetaMaskprimary · #0a0a0a · Δ1.579
- MetaMasktext · #0a0a0a · Δ1.579
- Pfizerprimary · #0a0a0a · Δ1.579
- Pfizertext · #0a0a0a · Δ1.579
- Airbusprimary · #070b11 · Δ1.682
- Airbustext · #070b11 · Δ1.682
- Coinbasetext · #0a0b0d · Δ1.779
Palettes built around it
Streetwear
Open in tool →Black, white, red, yellow — drop-culture signal colors, unmissable at thumbnail size.
Laser
Open in tool →Laser green, violet and cyan — the synthwave/gaming set; keep the type near-white and let one neon own each screen.
Fonts for this mood
#04090b reads as cool, dark, luxury. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #04090b
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 #04090b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/04090b-9cb4c4-df4e6b-1f232d-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