OKLCH Studio · shadcn/ui accent theme
shadcn/ui Blue theme colors: primary oklch(0.488 0.243 264.376) & chart tokens
shadcn/ui Blue: primary #1447e6 light / #193cb8 dark (oklch(0.488 0.243 264.376)). 20 of 22 checked pairs meet WCAG AA 4.5:1 (light 10/11, dark 10/11). Copy the accent overrides on the neutral base as OKLCH, @theme mapping or hex.
Blue is an accent theme: it overrides primary, secondary, the chart colours and sidebar-primary, and sits on top of a base colour. Every other value below comes from the neutral base (shadcn's default), and the contrast audit uses that combination. Source: shadcn/ui (MIT, © 2023 shadcn); all themes.
Preview
Card title
Muted description text on the card.
PrimarySecondaryAccentDestructive
Muted block with input border
Card title
Muted description text on the card.
PrimarySecondaryAccentDestructive
Muted block with input border
light mode tokens
| Token | Swatch | oklch() | Hex | In sRGB |
|---|---|---|---|---|
| --background | oklch(1 0 0) | #ffffff | Yes | |
| --foreground | oklch(0.145 0 0) | #0a0a0a | Yes | |
| --card | oklch(1 0 0) | #ffffff | Yes | |
| --card-foreground | oklch(0.145 0 0) | #0a0a0a | Yes | |
| --popover | oklch(1 0 0) | #ffffff | Yes | |
| --popover-foreground | oklch(0.145 0 0) | #0a0a0a | Yes | |
| --primaryblue | oklch(0.488 0.243 264.376) | #1447e6 | Yes | |
| --primary-foregroundblue | oklch(0.97 0.014 254.604) | #eff6ff | Yes | |
| --secondaryblue | oklch(0.967 0.001 286.375) | #f4f4f5 | Yes | |
| --secondary-foregroundblue | oklch(0.21 0.006 285.885) | #18181b | Yes | |
| --muted | oklch(0.97 0 0) | #f5f5f5 | Yes | |
| --muted-foreground | oklch(0.556 0 0) | #737373 | Yes | |
| --accent | oklch(0.97 0 0) | #f5f5f5 | Yes | |
| --accent-foreground | oklch(0.205 0 0) | #171717 | Yes | |
| --destructive | oklch(0.577 0.245 27.325) | #e7000b | No — hex is clipped | |
| --border | oklch(0.922 0 0) | #e5e5e5 | Yes | |
| --input | oklch(0.922 0 0) | #e5e5e5 | Yes | |
| --ring | oklch(0.708 0 0) | #a1a1a1 | Yes | |
| --chart-1blue | oklch(0.809 0.105 251.813) | #8ec5ff | No — hex is clipped | |
| --chart-2blue | oklch(0.623 0.214 259.815) | #2b7fff | No — hex is clipped | |
| --chart-3blue | oklch(0.546 0.245 262.881) | #155dfc | Yes | |
| --chart-4blue | oklch(0.488 0.243 264.376) | #1447e6 | Yes | |
| --chart-5blue | oklch(0.424 0.199 265.638) | #193cb8 | Yes | |
| --sidebar | oklch(0.985 0 0) | #fafafa | Yes | |
| --sidebar-foreground | oklch(0.145 0 0) | #0a0a0a | Yes | |
| --sidebar-primaryblue | oklch(0.546 0.245 262.881) | #155dfc | Yes | |
| --sidebar-primary-foregroundblue | oklch(0.97 0.014 254.604) | #eff6ff | Yes | |
| --sidebar-accent | oklch(0.97 0 0) | #f5f5f5 | Yes | |
| --sidebar-accent-foreground | oklch(0.205 0 0) | #171717 | Yes | |
| --sidebar-border | oklch(0.922 0 0) | #e5e5e5 | Yes | |
| --sidebar-ring | oklch(0.708 0 0) | #a1a1a1 | Yes |
dark mode tokens
| Token | Swatch | oklch() | Hex | In sRGB |
|---|---|---|---|---|
| --background | oklch(0.145 0 0) | #0a0a0a | Yes | |
| --foreground | oklch(0.985 0 0) | #fafafa | Yes | |
| --card | oklch(0.205 0 0) | #171717 | Yes | |
| --card-foreground | oklch(0.985 0 0) | #fafafa | Yes | |
| --popover | oklch(0.205 0 0) | #171717 | Yes | |
| --popover-foreground | oklch(0.985 0 0) | #fafafa | Yes | |
| --primaryblue | oklch(0.424 0.199 265.638) | #193cb8 | Yes | |
| --primary-foregroundblue | oklch(0.97 0.014 254.604) | #eff6ff | Yes | |
| --secondaryblue | oklch(0.274 0.006 286.033) | #27272a | Yes | |
| --secondary-foregroundblue | oklch(0.985 0 0) | #fafafa | Yes | |
| --muted | oklch(0.269 0 0) | #262626 | Yes | |
| --muted-foreground | oklch(0.708 0 0) | #a1a1a1 | Yes | |
| --accent | oklch(0.269 0 0) | #262626 | Yes | |
| --accent-foreground | oklch(0.985 0 0) | #fafafa | Yes | |
| --destructive | oklch(0.704 0.191 22.216) | #ff6467 | No — hex is clipped | |
| --border | oklch(1 0 0 / 10%) | #ffffff (10% alpha) | Yes | |
| --input | oklch(1 0 0 / 15%) | #ffffff (15% alpha) | Yes | |
| --ring | oklch(0.556 0 0) | #737373 | Yes | |
| --chart-1blue | oklch(0.809 0.105 251.813) | #8ec5ff | No — hex is clipped | |
| --chart-2blue | oklch(0.623 0.214 259.815) | #2b7fff | No — hex is clipped | |
| --chart-3blue | oklch(0.546 0.245 262.881) | #155dfc | Yes | |
| --chart-4blue | oklch(0.488 0.243 264.376) | #1447e6 | Yes | |
| --chart-5blue | oklch(0.424 0.199 265.638) | #193cb8 | Yes | |
| --sidebar | oklch(0.205 0 0) | #171717 | Yes | |
| --sidebar-foreground | oklch(0.985 0 0) | #fafafa | Yes | |
| --sidebar-primaryblue | oklch(0.623 0.214 259.815) | #2b7fff | No — hex is clipped | |
| --sidebar-primary-foregroundblue | oklch(0.97 0.014 254.604) | #eff6ff | Yes | |
| --sidebar-accent | oklch(0.269 0 0) | #262626 | Yes | |
| --sidebar-accent-foreground | oklch(0.985 0 0) | #fafafa | Yes | |
| --sidebar-border | oklch(1 0 0 / 10%) | #ffffff (10% alpha) | Yes | |
| --sidebar-ring | oklch(0.556 0 0) | #737373 | Yes |
Contrast audit (WCAG 2)
20 of 22 checked pairs meet AA 4.5:1. Pairs with a translucent side are skipped. A suggested fix keeps hue and chroma and moves the foreground's lightness to the nearest AA value, using the same logic as the contrast checker.
| Pair | Ratio | APCA Lc | AA 4.5 | AA large 3 | Fix / details |
|---|---|---|---|---|---|
| foreground on background#0a0a0a on #ffffff | 19.79:1 | 106 | Pass | Pass | Pair page → |
| card-foreground on card#0a0a0a on #ffffff | 19.79:1 | 106 | Pass | Pass | Pair page → |
| popover-foreground on popover#0a0a0a on #ffffff | 19.79:1 | 106 | Pass | Pass | Pair page → |
| primary-foreground on primary#eff6ff on #1447e6 | 6.27:1 | -81 | Pass | Pass | |
| secondary-foreground on secondary#18181b on #f4f4f5 | 16.11:1 | 98 | Pass | Pass | |
| muted-foreground on muted#737373 on #f5f5f5 | 4.34:1 | 67 | Fail | Pass | Set muted-foreground to oklch(0.516 0.000 0.0) (#676767, 5.18:1). |
| muted-foreground on background#737373 on #ffffff | 4.74:1 | 73 | Pass | Pass | Pair page → |
| accent-foreground on accent#171717 on #f5f5f5 | 16.44:1 | 99 | Pass | Pass | |
| destructive on background#e7000b on #ffffff | 4.76:1 | 70 | Pass | Pass | Pair page → |
| sidebar-foreground on sidebar#0a0a0a on #fafafa | 18.96:1 | 103 | Pass | Pass | |
| sidebar-primary-foreground on sidebar-primary#eff6ff on #155dfc | 4.82:1 | -74 | Pass | Pass |
| Pair | Ratio | APCA Lc | AA 4.5 | AA large 3 | Fix / details |
|---|---|---|---|---|---|
| foreground on background#fafafa on #0a0a0a | 18.96:1 | -104 | Pass | Pass | |
| card-foreground on card#fafafa on #171717 | 17.17:1 | -104 | Pass | Pass | |
| popover-foreground on popover#fafafa on #171717 | 17.17:1 | -104 | Pass | Pass | |
| primary-foreground on primary#eff6ff on #193cb8 | 8.10:1 | -87 | Pass | Pass | |
| secondary-foreground on secondary#fafafa on #27272a | 14.27:1 | -101 | Pass | Pass | |
| muted-foreground on muted#a1a1a1 on #262626 | 5.85:1 | -48 | Pass | Pass | |
| muted-foreground on background#a1a1a1 on #0a0a0a | 7.66:1 | -51 | Pass | Pass | |
| accent-foreground on accent#fafafa on #262626 | 14.49:1 | -101 | Pass | Pass | |
| destructive on background#ff6467 on #0a0a0a | 6.85:1 | -47 | Pass | Pass | |
| sidebar-foreground on sidebar#fafafa on #171717 | 17.17:1 | -104 | Pass | Pass | |
| sidebar-primary-foreground on sidebar-primary#eff6ff on #2b7fff | 3.45:1 | -64 | Fail | Pass | Set sidebar-primary-foreground to oklch(0.210 0.014 254.6) (#14191f, 4.69:1). |
Copy code
These are only the variables the Blue accent theme overrides. Add them after a base colour's variables in your globals.css.
shadcn/ui v4 globals.css (OKLCH)
:root {
--primary: oklch(0.488 0.243 264.376);
--primary-foreground: oklch(0.97 0.014 254.604);
--secondary: oklch(0.967 0.001 286.375);
--secondary-foreground: oklch(0.21 0.006 285.885);
--chart-1: oklch(0.809 0.105 251.813);
--chart-2: oklch(0.623 0.214 259.815);
--chart-3: oklch(0.546 0.245 262.881);
--chart-4: oklch(0.488 0.243 264.376);
--chart-5: oklch(0.424 0.199 265.638);
--sidebar-primary: oklch(0.546 0.245 262.881);
--sidebar-primary-foreground: oklch(0.97 0.014 254.604);
}
.dark {
--primary: oklch(0.424 0.199 265.638);
--primary-foreground: oklch(0.97 0.014 254.604);
--secondary: oklch(0.274 0.006 286.033);
--secondary-foreground: oklch(0.985 0 0);
--chart-1: oklch(0.809 0.105 251.813);
--chart-2: oklch(0.623 0.214 259.815);
--chart-3: oklch(0.546 0.245 262.881);
--chart-4: oklch(0.488 0.243 264.376);
--chart-5: oklch(0.424 0.199 265.638);
--sidebar-primary: oklch(0.623 0.214 259.815);
--sidebar-primary-foreground: oklch(0.97 0.014 254.604);
}Tailwind v4 @theme inline mapping
@theme inline {
--color-primary: var(--primary);
--color-primary-foreground: var(--primary-foreground);
--color-secondary: var(--secondary);
--color-secondary-foreground: var(--secondary-foreground);
--color-chart-1: var(--chart-1);
--color-chart-2: var(--chart-2);
--color-chart-3: var(--chart-3);
--color-chart-4: var(--chart-4);
--color-chart-5: var(--chart-5);
--color-sidebar-primary: var(--sidebar-primary);
--color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
}Hex fallback (for tools without OKLCH support)
:root {
--primary: #1447e6;
--primary-foreground: #eff6ff;
--secondary: #f4f4f5;
--secondary-foreground: #18181b;
--chart-1: #8ec5ff;
--chart-2: #2b7fff;
--chart-3: #155dfc;
--chart-4: #1447e6;
--chart-5: #193cb8;
--sidebar-primary: #155dfc;
--sidebar-primary-foreground: #eff6ff;
}
.dark {
--primary: #193cb8;
--primary-foreground: #eff6ff;
--secondary: #27272a;
--secondary-foreground: #fafafa;
--chart-1: #8ec5ff;
--chart-2: #2b7fff;
--chart-3: #155dfc;
--chart-4: #1447e6;
--chart-5: #193cb8;
--sidebar-primary: #2b7fff;
--sidebar-primary-foreground: #eff6ff;
}Related colours
Light primary: oklch(0.488 0.243 264.376) · #1447e6