Banks DB

Returns bank name and brand color by bankcard prefix (BIN).

It is useful on billing pages to use bank’s brand color when user starts to type card number.

It is a community driven database, so it can potentially contain mistakes. It's not a problem for UX enhancement, but you must not use it in your billing logic.

Demo

Try your card prefix in our demo. Note that only first 6 digits of card number are required.

Usage

PostCSS

With postcss-banks-db and postcss-contrast you can generate CSS for each bank:

.billing-form {
    transition: background .6s, color .6s;
    background: #eee;
}
@banks-db-template {
    .billing-form.is-%code% {
        background-color: %color%;
        color: contrast(%color%);
    }
}

And then switch bank’s style in JS:

import banksDB from 'banks-db';

const bank = banksDB(cardNumberField.value);
if ( bank.code ) {
  billingForm.className = 'billing-form is-' + (bank.code || 'other');
  bankName.innerText = bank.country === 'ru' ? bank.localTitle : bank.engTitle;
} else {
  billingForm.className = 'billing-form';
  bankName.innerText = '';
}

CSS-in-JS

import contrast from 'contrast';
import banksDB  from 'banks-db';

BillingForm  = ({ cardNumber }) => {
  const title, color;
  const bank = banksDB(this.props.cardNumber);
  if ( bank.code ) {
    title = bank.country === 'ru' ? bank.localTitle : bank.engTitle;
    color = bank.color;
  } else {
    title = '';
    color = '#eee';
  }
  return (
    <div style={{
      transition: 'background .6s, color .6s',
      background: color,
      color:      contrast(color) === 'light' ? 'black' : 'white'
    }}>
      <h2>{ title }</h2>
      …
    </div>
  );
}

Other Best Practices

See also best practices for billing forms:

fast-luhn to check bank card number for mistakes
Halter font to simulate bank card font
convert-layout to force English keyboard in holder name field

API

Library exports banksDB function. It accepts bankcard number and return bank object.

var banksDB = require('banks-db');
var bank    = banksDB('5275 9400 0000 0000');
console.log(bank.code) //=> 'ru-citibank'
console.log(bank.type) //=> 'mastercard'

If database doesn't contain this bank prefix, bank object will have only type field.

var unknown = banksDB('4111 1111 1111 1111');
console.log(bank.code) //=> undefined
console.log(bank.type) //=> 'visa'

You can get bank database by banksDB.data:

for ( let bank of banksDB.data ) {
    console.log(bank);
}

Bank Object

type: bankcard type. For example, 'visa' or 'mastercard'. Banks DB will return it even if bank is unknown.
code: unique bank code. For example, you can use it to generate CSS selectors for every bank.
color: bank's brand color.
localTitle: bank's title in local language.
engTitle: internation bank's title.
country: bank's operation country. For example, you can use it to display localTitle for local banks and engTitle for others.
url: bank's website URL.

Contributing

In case your bankcard doesn't work, please check if your bank already in Banks DB:

If your bank is already included, you can open an issue with your prefix (NOT full number of your card, just first 5 or 6 symbols) or send a pull request.
Otherwise you can add a new bank (see contributing guide).

bbsody/banks-db