diff --git a/CHANGELOG.md b/CHANGELOG.md
index deffef5..f74eab5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Four themes, each in light and dark: Catppuccin (Latte and Mocha), Gruvbox, Solarized, and High
+  contrast, black and white with every colour at 7:1 or more.
+
+### Fixed
+
+- Links in Classic, and hints and headings in Modern's dark half, are dark or light enough to
+  read comfortably. A failed-action message is easier to read in every theme.
+
 ## [0.8.1] - 2026-09-19
 
 ### Changed
diff --git a/CLAUDE.md b/CLAUDE.md
index 06333f9..a22b627 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -100,6 +100,7 @@ Patching that file by guessing an anchor string has failed repeatedly. Read the
 cargo test                # ~80 tests: parsing, filters, retention, schedules, SQL, per-user state
 npx tsc -p .              # type-checks web/src
 node tests/page-smoke.js
+node tests/contrast.js    # every theme's palette against WCAG AA
 npx playwright test       # 40 browser tests against a real daemon on fixture feeds
 ```
 
diff --git a/tests/contrast.js b/tests/contrast.js
new file mode 100644
index 0000000..0b009aa
--- /dev/null
+++ b/tests/contrast.js
@@ -0,0 +1,62 @@
+// Every theme's palette, checked against WCAG AA for the pairs the page actually draws. The
+// published palettes ipx borrows (Flat Remix, Paper, Adwaita...) fell short in places: an unread
+// count at 2.6:1, tags at 3.2:1. Each was tuned by hand; this keeps a new or edited theme honest.
+//
+//   node tests/contrast.js
+const fs = require('fs');
+const path = require('path');
+
+const css = fs.readFileSync(path.join(__dirname, '../web/app.css'), 'utf8');
+const blocks = {};
+for (const m of css.matchAll(/^(:root(?:\[[^\]]+\])*)\s*\{([^}]*)\}/gm)) {
+  const vars = {};
+  for (const v of m[2].matchAll(/--(\w+):\s*(#[0-9a-f]{6})\b/gi)) vars[v[1]] = v[2].toLowerCase();
+  if (Object.keys(vars).length) blocks[m[1]] = vars;
+}
+
+const lum = h => {
+  const c = [1, 3, 5].map(i => parseInt(h.slice(i, i + 2), 16) / 255)
+    .map(c => c <= .03928 ? c / 12.92 : ((c + .055) / 1.055) ** 2.4);
+  return .2126 * c[0] + .7152 * c[1] + .0722 * c[2];
+};
+const ratio = (a, b) => { const x = lum(a), y = lum(b); return (Math.max(x, y) + .05) / (Math.min(x, y) + .05); };
+
+// [colour, grounds it is drawn on, minimum]. 4.5 for text, 3 for an icon, dot or bar.
+const RULES = [
+  ['fg', ['bg', 'panel', 'panel2', 'raise'], 4.5],
+  ['dim', ['bg', 'panel', 'panel2'], 4.5],       // metadata, labels
+  ['faint', ['bg', 'panel', 'panel2'], 4.5],     // hints, column headings, the status bar
+  ['accent', ['bg', 'panel'], 4.5],              // links, in the list and the reader
+  ['ink', ['accent'], 4.5],                      // a primary button's label
+  ['ink', ['accent2'], 4.5],                     // the unread count on its badge
+  ['accent2', ['bg', 'panel', 'raise'], 3],      // the unread dot, the EQ bars, download bars
+  ['bad', ['bg', 'panel'], 4.5],                 // error text, the Error tag, a failed toast
+  ['warn', ['bg', 'panel'], 4.5],                // the Gone tag, log warnings
+  ['good', ['bg', 'panel', 'panel2'], 3],        // the downloaded and subscribed icons
+];
+
+const base = blocks[':root'];
+const themes = {};
+for (const sel of Object.keys(blocks)) {
+  const t = sel.match(/data-theme="(\w+)"/);
+  if (!t) continue;
+  const light = /data-mode="light"/.test(sel);
+  // A theme's dark half is :root under its own block; its light half adds the light block.
+  const name = `${t[1]}${light ? ' light' : ''}`;
+  themes[name] = light
+    ? { ...base, ...blocks[`:root[data-theme="${t[1]}"]`], ...blocks[sel] }
+    : { ...base, ...blocks[sel] };
+}
+themes['modern'] = base;
+
+let bad = 0;
+for (const [name, p] of Object.entries(themes)) {
+  for (const [fg, grounds, min] of RULES) for (const g of grounds) {
+    const r = ratio(p[fg], p[g]);
+    if (r < min) { bad++; console.log(`FAIL ${name}: --${fg} on --${g} is ${r.toFixed(2)}:1, needs ${min}`); }
+  }
+  // A border the same colour as the ground it is drawn on does not show (Nordic, once).
+  if (p.line === p.panel2) { bad++; console.log(`FAIL ${name}: --line is --panel2, so borders on it vanish`); }
+}
+if (bad) process.exit(1);
+console.log(`OK: ${Object.keys(themes).length} palettes clear AA for every pair the page draws`);
diff --git a/web/app.css b/web/app.css
index 7297b50..0a641d2 100644
--- a/web/app.css
+++ b/web/app.css
@@ -12,7 +12,7 @@
   --line:#2c3849;
   --fg:#f5f5f5;      /* #F5F5F5 device highlight */
   --dim:#95a0b1;     /* #95A0B1 straight from the icon's blue-grey */
-  --faint:#7a8799;  /* lifted from the icon ramp until it clears AA at small sizes */
+  --faint:#7e8b9c;  /* lifted from the icon ramp until it clears AA at small sizes */
   --accent:#92b2e6;  /* #92B2E6 the screen blue */
   --accent2:#f49e2c; /* #F49E2C the EQ bars */
   --ink:#0e131b;     /* text on an accent fill */
@@ -239,6 +239,151 @@
   --bad:#9c3f49;
   --shadow:0 8px 28px rgba(46,52,64,.15);
 }
+/* Catppuccin: Mocha for the dark half, Latte for the light, from catppuccin.com/palette. Base,
+   mantle and the surfaces for the grounds, text and subtext for type, mauve (its default accent)
+   and peach for the rest. */
+:root[data-theme="catppuccin"] {
+  --bg:#1e1e2e;      /* base */
+  --panel:#181825;   /* mantle */
+  --panel2:#313244;  /* surface0 */
+  --raise:#45475a;   /* surface1 */
+  --line:#45475a;
+  --fg:#cdd6f4;      /* text */
+  --dim:#bac2de;     /* subtext1 */
+  --faint:#a6adc8;   /* subtext0 */
+  --accent:#cba6f7;  /* mauve */
+  --accent2:#fab387; /* peach */
+  --ink:#11111b;     /* crust */
+  --good:#a6e3a1;
+  --warn:#f9e2af;
+  --bad:#f38ba8;
+  --shadow:0 8px 28px rgba(0,0,0,.45);
+}
+:root[data-theme="catppuccin"][data-mode="light"] {
+  --bg:#eff1f5;      /* base */
+  --panel:#e6e9ef;   /* mantle */
+  --panel2:#dce0e8;  /* crust */
+  --raise:#ccd0da;   /* surface0 */
+  --line:#bcc0cc;    /* surface1 */
+  --fg:#4c4f69;      /* text */
+  --dim:#5c5f77;     /* subtext1 */
+  --faint:#5f6276;   /* subtext0 */
+  --accent:#8638ec;  /* mauve */
+  --accent2:#c74e09; /* peach */
+  --ink:#ffffff;
+  --good:#3a9127;
+  --warn:#925d13;
+  --bad:#d00f39;
+  --shadow:0 8px 28px rgba(76,79,105,.15);
+}
+/* Gruvbox, from its README's palette: the bg and fg ramps, with its faded colours for the light
+   half as gruvbox itself does. Blue for the accent, orange for what is new. */
+:root[data-theme="gruvbox"] {
+  --bg:#282828;      /* bg0 */
+  --panel:#1d2021;   /* bg0_h */
+  --panel2:#32302f;  /* bg0_s */
+  --raise:#3c3836;   /* bg1 */
+  --line:#504945;    /* bg2 */
+  --fg:#ebdbb2;      /* fg */
+  --dim:#d5c4a1;     /* fg2 */
+  --faint:#a89984;   /* fg4 */
+  --accent:#83a598;  /* blue */
+  --accent2:#fe8019; /* orange */
+  --ink:#1d2021;
+  --good:#b8bb26;
+  --warn:#fabd2f;
+  --bad:#fb533f;
+  --shadow:0 8px 28px rgba(0,0,0,.45);
+}
+:root[data-theme="gruvbox"][data-mode="light"] {
+  --bg:#fbf1c7;      /* bg0 */
+  --panel:#f2e5bc;   /* bg0_s */
+  --panel2:#ebdbb2;  /* bg1 */
+  --raise:#d5c4a1;   /* bg2 */
+  --line:#d5c4a1;
+  --fg:#3c3836;      /* fg */
+  --dim:#504945;     /* fg2 */
+  --faint:#665c54;   /* fg3 */
+  --accent:#076678;  /* faded blue */
+  --accent2:#af3a03; /* faded orange */
+  --ink:#fbf1c7;
+  --good:#79740e;
+  --warn:#8d5c10;
+  --bad:#9d0006;
+  --shadow:0 8px 28px rgba(60,56,54,.15);
+}
+/* Solarized, from ethanschoonover.com/solarized: base03 and base3 for the grounds, the base tones
+   for type. It has two grounds per half, so panel2 and raise are steps between its own. */
+:root[data-theme="solarized"] {
+  --bg:#002b36;      /* base03 */
+  --panel:#073642;   /* base02 */
+  --panel2:#0b3f4c;
+  --raise:#124a58;
+  --line:#1d5563;
+  --fg:#eee8d5;      /* base2 */
+  --dim:#c3c7be;     /* between base2 and base1: base1 had to lift to read on base02 */
+  --faint:#97a5a7;   /* base0, lifted to base1 until it reads on base02 */
+  --accent:#4b9fda;  /* blue */
+  --accent2:#b58900; /* yellow */
+  --ink:#002b36;
+  --good:#859900;
+  --warn:#bb9315;
+  --bad:#e87674;
+  --shadow:0 8px 28px rgba(0,0,0,.45);
+}
+:root[data-theme="solarized"][data-mode="light"] {
+  --bg:#fdf6e3;      /* base3 */
+  --panel:#eee8d5;   /* base2 */
+  --panel2:#e6dfca;
+  --raise:#ddd5bd;
+  --line:#d3cab0;
+  --fg:#073642;      /* base02 */
+  --dim:#52666d;     /* base01 */
+  --faint:#54666d;   /* base00 */
+  --accent:#1e6da5;  /* blue */
+  --accent2:#cb4b16; /* orange */
+  --ink:#ffffff;
+  --good:#768700;
+  --warn:#846400;
+  --bad:#c52d2a;
+  --shadow:0 8px 28px rgba(0,43,54,.14);
+}
+/* High contrast: black and white with no mid-greys, every pair at 7:1 (AAA) or more, and borders
+   that show. For reading, not for looks. */
+:root[data-theme="contrast"] {
+  --bg:#000000;
+  --panel:#000000;
+  --panel2:#121212;
+  --raise:#333333;
+  --line:#9a9a9a;
+  --fg:#ffffff;
+  --dim:#ffffff;
+  --faint:#d6d6d6;
+  --accent:#8cc8ff;
+  --accent2:#ffd400;
+  --ink:#000000;
+  --good:#7ee787;
+  --warn:#ffd400;
+  --bad:#ff9a8f;
+  --shadow:0 0 0 1px #9a9a9a;
+}
+:root[data-theme="contrast"][data-mode="light"] {
+  --bg:#ffffff;
+  --panel:#ffffff;
+  --panel2:#f0f0f0;
+  --raise:#d6d6d6;
+  --line:#555555;
+  --fg:#000000;
+  --dim:#000000;
+  --faint:#303030;
+  --accent:#0033a0;
+  --accent2:#7a3d00;
+  --ink:#ffffff;
+  --good:#0a5c1c;
+  --warn:#6b4500;
+  --bad:#a30000;
+  --shadow:0 0 0 1px #555555;
+}
 /* Classic: the 2004 Mac app. Colours here; the chrome it needs is at the end of the sheet. */
 :root[data-theme="classic"] {
   color-scheme:light;
@@ -250,7 +395,7 @@
   --fg:#000000;
   --dim:#444444;
   --faint:#666666;
-  --accent:#3875d7;  /* Aqua selection blue */
+  --accent:#3268c0;  /* Aqua selection blue, a shade down so links clear AA on the source list */
   --accent2:#2a5db0;
   --ink:#ffffff;
   --good:#237a23;
@@ -720,7 +865,8 @@ input[type=range]::-moz-range-thumb{width:12px;height:12px;border:0;border-radiu
   background:var(--raise);border:1px solid var(--line);border-radius:9px;
   padding:9px 13px;font-size:13px;box-shadow:var(--shadow);animation:in .18s;max-width:340px;
 }
-.toast.bad{border-color:var(--bad);color:var(--bad)}
+/* On --panel, not a toast's --raise: the error colours are tuned to read on the page's grounds. */
+.toast.bad{border-color:var(--bad);color:var(--bad);background:var(--panel)}
 @keyframes in{from{opacity:0;transform:translateY(6px)}}
 #burger,#dback{display:none}
 /* Totals for what is showing, along the bottom, as the original's status bar. */
diff --git a/web/login.html b/web/login.html
index 848f014..4aed691 100644
--- a/web/login.html
+++ b/web/login.html
@@ -17,7 +17,7 @@
   --line:#2c3849;
   --fg:#f5f5f5;      /* #F5F5F5 device highlight */
   --dim:#95a0b1;     /* #95A0B1 straight from the icon's blue-grey */
-  --faint:#7a8799;  /* lifted from the icon ramp until it clears AA at small sizes */
+  --faint:#7e8b9c;  /* lifted from the icon ramp until it clears AA at small sizes */
   --accent:#92b2e6;  /* #92B2E6 the screen blue */
   --accent2:#f49e2c; /* #F49E2C the EQ bars */
   --ink:#0e131b;     /* text on an accent fill */
diff --git a/web/src/theme.ts b/web/src/theme.ts
index 6b36d2b..38b406e 100644
--- a/web/src/theme.ts
+++ b/web/src/theme.ts
@@ -13,6 +13,10 @@ const THEMES: Record<string, {name: string, modes: boolean}> = {
   flatremix: {name: 'Flat Remix', modes: true},
   paper: {name: 'Paper', modes: false},
   nordic: {name: 'Nordic', modes: true},
+  catppuccin: {name: 'Catppuccin', modes: true},
+  gruvbox: {name: 'Gruvbox', modes: true},
+  solarized: {name: 'Solarized', modes: true},
+  contrast: {name: 'High contrast', modes: true},
 };
 const MODES: Record<string, string> = {auto: 'Auto (matches your system)', light: 'Light', dark: 'Dark'};
 // Before themes came in light and dark, ipx.theme in localStorage held one of these.