diff --git a/docs/stories/bExternalFilters.stories.tsx b/docs/stories/bExternalFilters.stories.tsx
index 43d60da..4e930c5 100644
--- a/docs/stories/bExternalFilters.stories.tsx
+++ b/docs/stories/bExternalFilters.stories.tsx
@@ -66,7 +66,6 @@ export const Primary = () => {
           setBirthday(null);
         }}
         columns={(col) => [
-          //
           col((x) => x.avatar, {
             header: 'Avatar',
             renderCell: (avatar) => <img width={50} height={50} src={avatar} />,
diff --git a/docs/stories/fDatePicker.stories.tsx b/docs/stories/fDatePicker.stories.tsx
new file mode 100644
index 0000000..1708b28
--- /dev/null
+++ b/docs/stories/fDatePicker.stories.tsx
@@ -0,0 +1,41 @@
+import { useState } from 'react';
+import { DatePicker, DatePickerProps, DateRange } from '../../src';
+
+const today = new Date();
+const nextWeek = new Date();
+nextWeek.setDate(today.getDate() + 7);
+
+export default {
+  title: 'Date Picker',
+  component: DatePicker,
+  argTypes: {
+    value: { control: 'date' },
+    onChange: { action: 'changed' },
+    blockedRanges: {
+      control: 'object',
+    },
+  },
+};
+
+export const Primary = (args: DatePickerProps) => {
+  const [date, setDate] = useState<DateRange | null>(null);
+
+  return (
+    <DatePicker
+      {...args}
+      value={date}
+      onChange={(v) => {
+        if (v instanceof Date) {
+          setDate({ min: v, max: v });
+        } else {
+          setDate(v);
+        }
+        args.onChange(v);
+      }}
+    />
+  );
+};
+
+Primary.args = {
+  value: new Date(),
+};
diff --git a/src/components/datePicker.tsx b/src/components/datePicker.tsx
index 57915d8..efe396c 100644
--- a/src/components/datePicker.tsx
+++ b/src/components/datePicker.tsx
@@ -14,6 +14,7 @@ import { gray } from '../theme/defaultTheme/defaultClasses';
 import { useCssVariables } from '../theme/useCssVariables';
 import { DateInput } from './dateInput';
 import { Text } from './text';
+import { Interpolation, Theme } from '@emotion/react';
 
 export type DateRange = { min: Date; max: Date };
 
@@ -45,6 +46,8 @@ export type DatePickerProps = {
   /** Show buttons to quickly select suggested dates or date ranges */
   quickOptions?: DatePickerQuickOption[];
   /** Minimum selectable date */
+  /** Date ranges that are visually marked as blocked */
+  blockedRanges?: DateRange[];
   minDate?: Date;
   /** Maximum selectable date */
   maxDate?: Date;
@@ -209,6 +212,7 @@ export function DatePicker(props: DatePickerProps) {
     minDate,
     maxDate,
     showCalendarWeek,
+    blockedRanges = [],
   } = defaults<DatePickerProps>(props, context);
 
   function onChange(value: Date | DateRange | null) {
@@ -228,6 +232,65 @@ export function DatePicker(props: DatePickerProps) {
   const IconButton = useTheme((t) => t.components.IconButton);
   const ChevronRight = useTheme((t) => t.icons.ChevronRight);
   const cssVariables = useCssVariables();
+  function getDayCssStyles({
+    disabled,
+    prevMonth,
+    nextMonth,
+    today,
+    blocked,
+    selected,
+    preSelected,
+  }: {
+    disabled?: boolean;
+    prevMonth?: boolean;
+    nextMonth?: boolean;
+    today?: boolean;
+    blocked?: boolean;
+    selected?: boolean;
+    preSelected?: boolean;
+  }): Interpolation<Theme> {
+    return [
+      {
+        padding: 10,
+        border: 'none',
+        background: 'transparent',
+        cursor: disabled ? undefined : 'pointer',
+        font: 'inherit',
+      },
+      (prevMonth || nextMonth) && {
+        color: gray,
+      },
+      today && {
+        outline: '1px solid var(--secondaryMain)',
+      },
+      blocked && {
+        background: 'var(--blockedMain)',
+        color: 'var(--blockedContrastText)',
+      },
+      selected && {
+        background: 'var(--primaryMain)',
+        color: 'var(--primaryContrastText)',
+      },
+      blocked &&
+        selected && {
+          position: 'relative',
+          '::before': {
+            content: '""',
+            position: 'absolute',
+            top: 0,
+            right: 0,
+            bottom: 0,
+            left: 0,
+            background: 'var(--blockedMain)',
+            clipPath: 'polygon(0 0, 0 50%, 50% 0)',
+          },
+        },
+      preSelected && {
+        background: 'var(--primaryLight)',
+        color: 'var(--primaryContrastText)',
+      },
+    ];
+  }
 
   const mountTime = useMemo(() => new Date(), []);
   const [dateInView, setDateInView] = useState<Date>(defaultDateInView ?? mountTime);
@@ -252,6 +315,7 @@ export function DatePicker(props: DatePickerProps) {
         <Button
           key={index}
           variant="text"
+          type="button"
           onClick={() => {
             setDirty(undefined);
 
@@ -375,7 +439,7 @@ export function DatePicker(props: DatePickerProps) {
               alignItems: 'center',
             }}
           >
-            <IconButton {...getBackProps({ calendars })}>
+            <IconButton type="button" {...getBackProps({ calendars })}>
               <ChevronRight css={{ transform: 'rotate3d(0, 0, 1, 180deg)' }} />
             </IconButton>
 
@@ -383,7 +447,7 @@ export function DatePicker(props: DatePickerProps) {
               {formatMonth(month)} {formatYear(year)}
             </div>
 
-            <IconButton {...getForwardProps({ calendars })}>
+            <IconButton type="button" {...getForwardProps({ calendars })}>
               <ChevronRight />
             </IconButton>
           </div>
@@ -433,6 +497,7 @@ export function DatePicker(props: DatePickerProps) {
                 <Fragment key={index}>
                   {showCalendarWeek ? (
                     <button
+                      type="button"
                       css={{
                         padding: 10,
                         border: 'none',
@@ -480,33 +545,21 @@ export function DatePicker(props: DatePickerProps) {
                             date,
                             min <= hovered ? { min, max: hovered } : { min: hovered, max: min },
                           )));
+                    const blocked = blockedRanges.some((range) => dateIntersect(date, range));
 
                     return (
                       <button
+                        type="button"
                         key={`${index}-${dayIndex}`}
-                        css={[
-                          {
-                            padding: 10,
-                            border: 'none',
-                            background: 'transparent',
-                            cursor: disabled ? undefined : 'pointer',
-                            font: 'inherit',
-                          },
-                          (prevMonth || nextMonth) && {
-                            color: gray,
-                          },
-                          today && {
-                            outline: '1px solid var(--secondaryMain)',
-                          },
-                          selected && {
-                            background: 'var(--primaryMain)',
-                            color: 'var(--primaryContrastText)',
-                          },
-                          preSelected && {
-                            background: 'var(--primaryLight)',
-                            color: 'var(--primaryContrastText)',
-                          },
-                        ]}
+                        css={getDayCssStyles({
+                          disabled,
+                          prevMonth,
+                          nextMonth,
+                          today,
+                          blocked,
+                          selected,
+                          preSelected,
+                        })}
                         {...getDateProps({ dateObj: dateObject })}
                         onClick={() => {
                           if (dirty) {
diff --git a/src/theme/defaultTheme/defaultColors.ts b/src/theme/defaultTheme/defaultColors.ts
index 7e95874..451da4b 100644
--- a/src/theme/defaultTheme/defaultColors.ts
+++ b/src/theme/defaultTheme/defaultColors.ts
@@ -3,4 +3,5 @@ import type { TableTheme } from '../../types';
 export const defaultColors: TableTheme['colors'] = {
   primary: { main: '#1976d2', light: '#42a5f5', contrastText: '#fff' },
   secondary: { main: '#9c27b0', light: '#ba68c8', contrastText: '#fff' },
+  blocked: { main: '#f44336', light: '#f26257', contrastText: '#fff' },
 };
diff --git a/src/theme/tableTheme.tsx b/src/theme/tableTheme.tsx
index 32905e8..65bd4f7 100644
--- a/src/theme/tableTheme.tsx
+++ b/src/theme/tableTheme.tsx
@@ -31,6 +31,7 @@ export function mergeThemes<T>(...themes: PartialTableTheme<T>[]): PartialTableT
     colors: {
       primary: Object.assign({}, ...themes.map((theme) => theme.colors?.primary)),
       secondary: Object.assign({}, ...themes.map((theme) => theme.colors?.secondary)),
+      blocked: Object.assign({}, ...themes.map((theme) => theme.colors?.blocked)),
     },
     spacing: themes
       .map((theme) => theme.spacing)
diff --git a/src/theme/useCssVariables.ts b/src/theme/useCssVariables.ts
index 6e1b638..697609e 100644
--- a/src/theme/useCssVariables.ts
+++ b/src/theme/useCssVariables.ts
@@ -1,13 +1,18 @@
 import { useTheme } from '../hooks/useTheme';
 
 export function useCssVariables() {
-  return useTheme(({ spacing, colors }) => ({
-    '--spacing': spacing,
-    '--primaryMain': colors.primary.main,
-    '--primaryLight': colors.primary.light,
-    '--primaryContrastText': colors.primary.contrastText,
-    '--secondaryMain': colors.secondary.main,
-    '--secondaryLight': colors.secondary.light,
-    '--secondaryContrastText': colors.secondary.contrastText,
-  }));
+  return useTheme(({ spacing, colors }) => {
+    return {
+      '--spacing': spacing,
+      '--primaryMain': colors.primary.main,
+      '--primaryLight': colors.primary.light,
+      '--primaryContrastText': colors.primary.contrastText,
+      '--secondaryMain': colors.secondary.main,
+      '--secondaryLight': colors.secondary.light,
+      '--secondaryContrastText': colors.secondary.contrastText,
+      '--blockedMain': colors.blocked.main,
+      '--blockedLight': colors.blocked.light,
+      '--blockedContrastText': colors.blocked.contrastText,
+    };
+  });
 }
diff --git a/src/types.ts b/src/types.ts
index 870f68b..d7f7a69 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -75,6 +75,7 @@ export interface TableTheme<T = unknown> {
       children: ReactNode;
       onClick?: (event: React.MouseEvent<Element>) => void;
       className?: string;
+      type?: React.ButtonHTMLAttributes<HTMLButtonElement>['type'];
     }>;
     Button: ComponentType<{
       children: ReactNode;
@@ -83,6 +84,7 @@ export interface TableTheme<T = unknown> {
       variant?: 'text' | 'outlined' | 'contained';
       disabled?: boolean;
       className?: string;
+      type?: React.ButtonHTMLAttributes<HTMLButtonElement>['type'];
     }>;
     Checkbox: ComponentType<{
       checked: boolean;
@@ -132,6 +134,7 @@ export interface TableTheme<T = unknown> {
   colors: {
     primary: { main: string; light: string; contrastText: string };
     secondary: { main: string; light: string; contrastText: string };
+    blocked: { main: string; light: string; contrastText: string };
   };
   /** Spacing. */
   spacing: string | number;