Dusk
Open in tool →Slate blue with a copper accent — calm, professional, slightly editorial; suits consultancies and journals.
Color
#231f2d
#231f2d
hex
#231f2drgb
rgb(35, 31, 45)hsl
hsl(257, 18%, 15%)oklch
oklch(0.25 0.027 297.5)Closest name: Eclipse Elixir (#1f2133)Relative luminance 0.0153
Colors that go with #231f2d
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 #231f2d without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #231f2d in 18 real palettes, including Wikipedia's brand system and Google's brand system, as the accent.
Blue #0000ff
shipped23 real palettes, including Rolex's brand system and Bumble's brand system put Blue beside #231f2d, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #231f2d in 10 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour.
Blush Pink #e8b4b8
shipped6 real palettes, including Graphite Mono and Blush put Blush Pink beside #231f2d, as the accent.
Brown #a52a2a
shipped5 real palettes, including Woodsmoke and Typewriter put Brown beside #231f2d, as the accent.
Burgundy #800020
shipped4 real palettes, including Qatar Airways's brand system and Candlelight put Burgundy beside #231f2d, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #231f2d in 6 real palettes, including Kiln and Coastal, as the accent.
Real palettes that use #231f2d
Tints & shades
Harmonies
Contrast
| #231f2d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 16.09:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.31:1 | 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 #231f2d as the background.
Brands using this color
Palettes built around it
Pastel Pop
Open in tool →Pastels pushed to the saturated end — pink, sky and lemon — for brands that want soft AND loud.
Tide Pool
Open in tool →Sea-green and slate with a coral — a literal tide pool: two cool tones, one warm creature.
Fonts for this mood
#231f2d reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #231f2d
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 #231f2d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/231f2d-ac9cc4-dfc24e-291f2d-e9ebf1?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