Show Card

What was measured

Closest neighbours

ΔE00 24.4

how alike two adjacent swatches look

Darkest to lightest

6.21:1

WCAG contrast across the set

Lightness covered

64 pts

of OKLCH lightness, 0–100

Under colour blindness

ΔE00 21.3

worst under tritanopia

Every pair here survives protanopia, deuteranopia and tritanopia, so these five can stand for five different things.

Five colours are not an interface, so this is an offer rather than a token set. It does not clear WCAG AA on secondary text — stated here rather than left for you to discover.

/* Show Card — Announcement pages: one gold, one violet, one sheet of paper. */
:root {
  --palette-1: #442e00;
  --palette-2: #986b00;
  --palette-3: #f8f0da;
  --palette-4: #3e2182;
  --palette-5: #b6aafe;

  /* A suggested mapping, not a token set. It falls short of WCAG AA on secondary text — fix that before shipping. */
  --bg: #f8f0da;
  --text: #442e00;        /* 11.28:1 on --bg */
  --muted: #986b00;      /* 4.16:1 on --bg */
  --accent: #3e2182;     /* 10.58:1 on --bg */
  --accent-text: #ffffff;
}

// tailwind.config — Show Card
export default {
  theme: {
    extend: {
      colors: {
        showcard: {
        100: "#442e00",
        200: "#986b00",
        300: "#f8f0da",
        400: "#3e2182",
        500: "#b6aafe",
        },
      },
    },
  },
};

Use the Show Card palette: #442E00, #986B00, #F8F0DA, #3E2182, #B6AAFE.

It is for this: Announcement pages: one gold, one violet, one sheet of paper.

Map it as ground #F8F0DA, body text #442E00, secondary text #986B00, and one accent #3E2182 with #FFFFFF printed on it. That mapping does not clear WCAG AA on secondary text — body 11.28:1, secondary 4.16:1, accent 10.58:1. Fix the named role against the ground before shipping; do not ship the pair as given.

Do not use it for: Multi-brand systems — this is too particular to host others.

Do not add a sixth colour, do not tint the greys toward a second hue, and do not carry meaning on hue alone — once colour vision is taken away the closest two of these sit only 21.3 apart on the CIEDE2000 scale, so pair every coloured state with a label or an icon.

How this palette was built · no hex was chosen by hand

The catalog states a recipe — scene from hue 80 and 290 — and the five colours are derived from it in OKLCH, where a step of lightness is a step your eye agrees with rather than one the hex numbers agree with. That is why the numbers above are properties of this palette rather than claims about it.

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