diff --git a/.changeset/pre.json b/.changeset/pre.json
index 822012a1..5538881f 100644
--- a/.changeset/pre.json
+++ b/.changeset/pre.json
@@ -14,8 +14,10 @@
     "autocomplete-external-mode",
     "autocomplete-search-magnifier",
     "card-mycsc-anatomy",
+    "chart-slots-vivid",
     "chart-tokens",
     "dark-mode-mycsc-retune",
+    "dark-mode-vivid-retune",
     "designated-trigger-popover-chain",
     "divider-token-dark-mode",
     "dropdown-hide-details-restore",
diff --git a/packages/csc-ui-react/CHANGELOG.md b/packages/csc-ui-react/CHANGELOG.md
index 299d2369..27e5fc25 100644
--- a/packages/csc-ui-react/CHANGELOG.md
+++ b/packages/csc-ui-react/CHANGELOG.md
@@ -1,5 +1,61 @@
 # @cscfi/csc-ui-react
 
+## 4.0.0-alpha.8
+
+### Minor Changes
+
+- [#260](https://github.com/CSCfi/ui/pull/260) [`6f3ac93`](https://github.com/CSCfi/ui/commit/6f3ac93ea3c0670884c5e22d23b7a73fbfcc29b3) Thanks [@villeerikssoncsc](https://github.com/villeerikssoncsc)! - Re-derive the twelve chart series slots (`--c-chart-1` … `--c-chart-12`) as
+  vivid single hues (ADR-0030, amended).
+
+  - The previous set was five dark/light shade pairs plus two singles, parked
+    just above the chroma floor; it read flat, and the dark shades read too
+    dark. The new set is twelve single hues at a mid lightness (OKLCH L
+    0.55–0.67 light, 0.58–0.67 dark) with chroma pushed to the sRGB gamut under
+    per-hue ceilings.
+  - Slots 1–7 keep their hue identities (blue, magenta, gold, purple, teal,
+    rose, cyan) so charts with up to seven series keep familiar colours; slots
+    8–12 are new hues (indigo, orchid, olive, violet, aqua). Status hue bands
+    (reds, oranges, greens) are excluded.
+  - Every slot now clears 3:1 on both chart surfaces — the four dark-mode
+    relief slots are gone. The all-pairs safe prefix for scatter/bubble/map
+    forms stays at slots 1–3.
+  - Validated as a set with the dataviz validator: adjacent-pair CVD ΔE 10.2
+    (light) / 8.7 (dark), normal-vision floor 17.9 / 16.9.
+
+  Chart tokens are frozen literals, so this does not interact with
+  `applyTheme`; consumers who override `--c-chart-*` are unaffected.
+
+- [#260](https://github.com/CSCfi/ui/pull/260) [`6f3ac93`](https://github.com/CSCfi/ui/commit/6f3ac93ea3c0670884c5e22d23b7a73fbfcc29b3) Thanks [@villeerikssoncsc](https://github.com/villeerikssoncsc)! - Make dark mode more vibrant: saturated fills and visible subtle tints, all
+  still resolved inside each role's own family (ADR-0034).
+
+  - The ramp core (`src/theme/ramp.js`) now holds full seed chroma through
+    steps 400–300 and tapers only from 200 up (`C_FACTOR` 400/300/200:
+    0.92/0.78/0.55 → 1.0/1.0/0.72). Step 300 is every family's dark-mode fill
+    and 200 its hover, and the old taper left low-chroma seeds reading grey —
+    the dark primary button moves from `#67a2b0` to `#54a5b7` at the same
+    contrast. Every family's 200–400 steps shift accordingly in both modes
+    (light-mode hover fills get slightly richer); warning and error are at the
+    sRGB gamut edge and do not move. Consumer ramps from `applyTheme` /
+    `themeToCss` follow the same curve.
+  - Dark-mode status and accent fills move to the saturated `*-400` step
+    (hover `*-300`, ink `*-950`). Primary, secondary and link fills stay where
+    they are — their next step fails WCAG AA text with any ink.
+  - Dark-mode subtle tints move from `*-800` to `*-700` (hover `*-600`) with
+    the near-white `*-50` ink. `*-800` sat within 1.0–1.6:1 of the slate-800
+    page and read as the page colour.
+  - Dark nav chrome moves one step lighter (`primary-700`, hover `primary-600`)
+    and the active item becomes the brand `primary-500` under white ink.
+  - The frozen chart slots (ADR-0030) are literals and do not move.
+
+  Dark mode passes every audited text pair at AA and every non-text pair at
+  3:1 (`scripts/audit-contrast.mjs --strict`); ramp parity
+  (`scripts/check-ramp-parity.mjs`) holds.
+
+### Patch Changes
+
+- Updated dependencies [[`6f3ac93`](https://github.com/CSCfi/ui/commit/6f3ac93ea3c0670884c5e22d23b7a73fbfcc29b3), [`6f3ac93`](https://github.com/CSCfi/ui/commit/6f3ac93ea3c0670884c5e22d23b7a73fbfcc29b3)]:
+  - @cscfi/csc-ui@4.0.0-alpha.8
+
 ## 4.0.0-alpha.7
 
 ### Minor Changes
diff --git a/packages/csc-ui-react/package.json b/packages/csc-ui-react/package.json
index a2869b63..d9df28f7 100644
--- a/packages/csc-ui-react/package.json
+++ b/packages/csc-ui-react/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cscfi/csc-ui-react",
-  "version": "4.0.0-alpha.7",
+  "version": "4.0.0-alpha.8",
   "description": "React components for the @cscfi/csc-ui custom elements, generated from the Custom Elements Manifest.",
   "author": "My CSC Team <suiteamsui@gmail.com>",
   "type": "module",
diff --git a/packages/csc-ui/CHANGELOG.md b/packages/csc-ui/CHANGELOG.md
index 038c68fb..b4b66bbf 100644
--- a/packages/csc-ui/CHANGELOG.md
+++ b/packages/csc-ui/CHANGELOG.md
@@ -1,5 +1,56 @@
 # @cscfi/csc-ui
 
+## 4.0.0-alpha.8
+
+### Minor Changes
+
+- [#260](https://github.com/CSCfi/ui/pull/260) [`6f3ac93`](https://github.com/CSCfi/ui/commit/6f3ac93ea3c0670884c5e22d23b7a73fbfcc29b3) Thanks [@villeerikssoncsc](https://github.com/villeerikssoncsc)! - Re-derive the twelve chart series slots (`--c-chart-1` … `--c-chart-12`) as
+  vivid single hues (ADR-0030, amended).
+
+  - The previous set was five dark/light shade pairs plus two singles, parked
+    just above the chroma floor; it read flat, and the dark shades read too
+    dark. The new set is twelve single hues at a mid lightness (OKLCH L
+    0.55–0.67 light, 0.58–0.67 dark) with chroma pushed to the sRGB gamut under
+    per-hue ceilings.
+  - Slots 1–7 keep their hue identities (blue, magenta, gold, purple, teal,
+    rose, cyan) so charts with up to seven series keep familiar colours; slots
+    8–12 are new hues (indigo, orchid, olive, violet, aqua). Status hue bands
+    (reds, oranges, greens) are excluded.
+  - Every slot now clears 3:1 on both chart surfaces — the four dark-mode
+    relief slots are gone. The all-pairs safe prefix for scatter/bubble/map
+    forms stays at slots 1–3.
+  - Validated as a set with the dataviz validator: adjacent-pair CVD ΔE 10.2
+    (light) / 8.7 (dark), normal-vision floor 17.9 / 16.9.
+
+  Chart tokens are frozen literals, so this does not interact with
+  `applyTheme`; consumers who override `--c-chart-*` are unaffected.
+
+- [#260](https://github.com/CSCfi/ui/pull/260) [`6f3ac93`](https://github.com/CSCfi/ui/commit/6f3ac93ea3c0670884c5e22d23b7a73fbfcc29b3) Thanks [@villeerikssoncsc](https://github.com/villeerikssoncsc)! - Make dark mode more vibrant: saturated fills and visible subtle tints, all
+  still resolved inside each role's own family (ADR-0034).
+
+  - The ramp core (`src/theme/ramp.js`) now holds full seed chroma through
+    steps 400–300 and tapers only from 200 up (`C_FACTOR` 400/300/200:
+    0.92/0.78/0.55 → 1.0/1.0/0.72). Step 300 is every family's dark-mode fill
+    and 200 its hover, and the old taper left low-chroma seeds reading grey —
+    the dark primary button moves from `#67a2b0` to `#54a5b7` at the same
+    contrast. Every family's 200–400 steps shift accordingly in both modes
+    (light-mode hover fills get slightly richer); warning and error are at the
+    sRGB gamut edge and do not move. Consumer ramps from `applyTheme` /
+    `themeToCss` follow the same curve.
+  - Dark-mode status and accent fills move to the saturated `*-400` step
+    (hover `*-300`, ink `*-950`). Primary, secondary and link fills stay where
+    they are — their next step fails WCAG AA text with any ink.
+  - Dark-mode subtle tints move from `*-800` to `*-700` (hover `*-600`) with
+    the near-white `*-50` ink. `*-800` sat within 1.0–1.6:1 of the slate-800
+    page and read as the page colour.
+  - Dark nav chrome moves one step lighter (`primary-700`, hover `primary-600`)
+    and the active item becomes the brand `primary-500` under white ink.
+  - The frozen chart slots (ADR-0030) are literals and do not move.
+
+  Dark mode passes every audited text pair at AA and every non-text pair at
+  3:1 (`scripts/audit-contrast.mjs --strict`); ramp parity
+  (`scripts/check-ramp-parity.mjs`) holds.
+
 ## 4.0.0-alpha.7
 
 ### Minor Changes
diff --git a/packages/csc-ui/package.json b/packages/csc-ui/package.json
index e9c82545..30cf5fbe 100644
--- a/packages/csc-ui/package.json
+++ b/packages/csc-ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cscfi/csc-ui",
-  "version": "4.0.0-alpha.7",
+  "version": "4.0.0-alpha.8",
   "description": "Vue 3-based replacement for @cscfi/csc-ui — same custom element tag names, Vue v-model contract.",
   "type": "module",
   "main": "./dist/csc-ui.js",