Mint Modern
Open in tool →Emerald as a primary rather than a success color, anchored by deep teal text — fresh, friendly, and fintech-adjacent.
Color
#03211b
#03211b
hex
#03211brgb
rgb(3, 33, 27)hsl
hsl(168, 83%, 7%)oklch
oklch(0.223 0.038 177.1)Closest name: Nightmare (#112211)Relative luminance 0.0119
Colors that go with #03211b
Blue Violet, Charcoal and Crimson 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.
Blue Violet #8a2be2
triadicshippedBlue Violet completes a triad with #03211b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #03211b: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
split-complementshippedCrimson is a split-complement of #03211b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sienna #a0522d
triadicshippedSienna completes a triad with #03211b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Teal #008080
analogousshippedTeal is #03211b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Medium Violet Red #c71585
complementaryshippedMedium Violet Red sits directly opposite #03211b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #03211b in 15 real palettes, including Warner Bros.'s brand system and Trailhead, as the accent.
Blue #0000ff
shipped22 real palettes, including CVS's brand system and Signal's brand system put Blue beside #03211b, as the supporting colour.
Real palettes that use #03211b
Tints & shades
Harmonies
Contrast
| #03211b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 16.97:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.24:1 | 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 #03211b as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#03211b reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #03211b
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 #03211b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/03211b-a2bebc-d459ad-1f2a2d-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