KhataOS/ThemesEvery pair meets WCAG 2.2 AA

Seven themes. Light and dark.

Each theme suits a different kind of user, and each comes in light and dark. Light, dark or Auto, the density and the text size are separate choices that work with every theme. Your choice is kept for you on your device, never in the company's books.

Ledger
Chartered
Executive
Terminal
Fresh
Comfort
Regional

Change theme with `Ctrl+K` → Theme

Press Ctrl+K and choose Theme.
Move with ↑ ↓. The screen changes as you go.
Enter keeps the theme. Esc puts the old one back.

Printed and PDF invoices aren't themed: they keep their own invoice design.

The theme picker in KhataOS, listing Ledger, Chartered, Executive, Terminal, Fresh and Comfort, and the regional palettes, each with a short description — The theme picker, with a short note beside each theme.

01/Ledger

Ledger Default

For everyone

Calm and trustworthy. Ledger indigo for the top bar and titles, marigold for the spine, the cursor edge and the key letters, and warm paper behind white cards. It's the theme KhataOS starts with, in Auto mode.

Mode

KhataOS in the Ledger theme: the home screen with the company summary and the keyboard menu — **Home screen** · light

KhataOS in the Ledger theme: the dashboard with cash, bank, receivables and payables, and charts by month — **Dashboard** · light

KhataOS in the Ledger theme, dark mode: the Accountant's Desk, with due dates, reminders and a calendar — **Accountant's Desk** · dark

KhataOS in the Ledger theme, dark mode: the Trial Balance in Arabic, laid out right to left; ledger names stay as they were typed — **Trial Balance in Arabic** · dark Right to left

KhataOS in the Ledger theme: the home screen on a phone, with Back, calculator and function key buttons — **On a phone** · light

02/Chartered

Chartered

For chartered accountants and auditors

Like print. Paper white, navy ink, red ink for accents and negative figures, serif report titles, and square corners with hairline rules instead of shadows, so a Trial Balance on screen reads like a signed statement.

Mode

KhataOS in the Chartered theme: the home screen with the company summary and the keyboard menu — **Home screen** · light

KhataOS in the Chartered theme, dark mode: a payment voucher being entered, with the ledger list beside it — **Payment voucher** · dark

KhataOS in the Chartered theme, light mode: the Trial Balance in Arabic, laid out right to left; ledger names stay as they were typed — **Trial Balance in Arabic** · light Right to left

KhataOS in the Chartered theme, dark mode: the home screen on a phone, with Back, calculator and function key buttons — **On a phone** · dark

03/Executive

Executive

For owners, CxOs and directors

Refined graphite with a quiet champagne brass accent, and larger key figures on the Dashboard and in report titles. Less chrome, numbers first, and easy to read on a boardroom screen.

Mode

KhataOS in the Executive theme: the home screen with the company summary and the keyboard menu — **Home screen** · light

KhataOS in the Executive theme, light mode: the Trial Balance, with ledgers in debit and credit columns and a grand total — **Trial Balance** · light

KhataOS in the Executive theme, dark mode: the home screen in Arabic, laid out right to left — **Home screen in Arabic** · dark Right to left

KhataOS in the Executive theme, light mode: the home screen on a phone, with Back, calculator and function key buttons — **On a phone** · light

04/Terminal

Terminal

For finance and tech enthusiasts

Dense, with the data first. Monospace figures line up digit for digit, corners are square, dark mode is near black with high contrast ink, and up is blue while down is orange. It pairs well with Compact density.

Mode

KhataOS in the Terminal theme: the home screen with the company summary and the keyboard menu — **Home screen** · light

KhataOS in the Terminal theme, light mode: the dashboard with cash, bank, receivables and payables, and charts by month — **Dashboard** · light

KhataOS in the Terminal theme, dark mode: the Trial Balance in Arabic, laid out right to left; ledger names stay as they were typed — **Trial Balance in Arabic** · dark Right to left

KhataOS in the Terminal theme, dark mode: a payment voucher on a phone, picking a cash or bank ledger from a sheet — **Voucher on a phone** · dark

05/Fresh

Fresh

For young people and first businesses

Vibrant violet with a coral accent and softer, rounder corners, yet every colour pair still meets AA and nothing glows. Friendly for a first business or a side hustle, and professional enough to show a client.

Mode

KhataOS in the Fresh theme: the home screen with the company summary and the keyboard menu — **Home screen** · light

KhataOS in the Fresh theme, dark mode: the dashboard with cash, bank, receivables and payables, and charts by month — **Dashboard** · dark

KhataOS in the Fresh theme, light mode: the home screen in Arabic, laid out right to left — **Home screen in Arabic** · light Right to left

KhataOS in the Fresh theme, dark mode: the home screen on a phone, with Back, calculator and function key buttons — **On a phone** · dark

06/Comfort

Comfort

For older users, low vision and long days

Accessibility first. Text, rows and click targets are 20% larger, on top of your own text size. Body and secondary text meet AAA contrast (7:1), field borders are solid, the focus ring is 3 px wide, and the cursor row is a pale yellow that is easy to follow.

Mode

KhataOS in the Comfort theme: the home screen with the company summary and the keyboard menu — **Home screen** · light

KhataOS in the Comfort theme, dark mode: the Trial Balance, with ledgers in debit and credit columns and a grand total — **Trial Balance** · dark

KhataOS in the Comfort theme, light mode: the Trial Balance in Arabic, laid out right to left; ledger names stay as they were typed — **Trial Balance in Arabic** · light Right to left

KhataOS in the Comfort theme, light mode: a payment voucher on a phone, picking a cash or bank ledger from a sheet — **Voucher on a phone** · light

07/Regional

Regional

For companies in India, the Gulf, the UK, and East Asia with Singapore

Four palettes drawn from local materials rather than flags. India: indigo and turmeric on sandal cream. Gulf: deep emerald and sand with muted gold. United Kingdom: heritage navy and brick red on stone. East Asia and Singapore: deep teal with lacquer red, and blue and orange for profit and loss, because red means up on East Asian markets. KhataOS picks the palette from the company's country, or you choose one.

Mode