The default app font is "Plusjakartasans"
Default colour: 

Heading 1

56px size, #111 colour, -2 letter spacing, 1.1 line spacing, 700 weight

Heading 2

48px size, #111 colour, -2 letter spacing, 1.2 line spacing, 700 weight

Heading 3

36px size, #111 colour, -1 letter spacing, 1.3 line spacing, 700 weight

Heading 4

30px size, #111 colour, 0 letter spacing, 1.4 line spacing, 700 weight
Heading 5
24px size, #111 colour, 0 letter spacing, 1.4 line spacing, 600 weight
Heading 6
20px size, #111 colour, 0 letter spacing, 1.4 line spacing, 600 weight
Body Extra Large... 18px, 500 weight, 1.4 line spacing
Body Large... 16px, 500 weight, 1.5 line spacing
Body Medium... 14px, 500 weight, 1.5 line spacing
Body Small... 12px, 500 weight, 1.5 line spacing
All Headings and body text have contrast classes. Add "Contrast" to each. See below examples...

Heading 1

Heading 2

This is some text inside of a div block. This is "Body XL"
This is some text inside of a div block. This is "Body sm"

Brand colours:

Text Link
HB Core Blue
#244f8d
HB Secondary
#4076c4
HB Light Blue
#94c9fb
HB Super Light Blue
#d4e9fc
HB Lightest blue
#f7fbff

Neutral colours:

Grey 50
#FAFAFA
Grey 200
#EEEEEE
Grey 400
#BDBDBD
Grey 600
#757575
Grey 800
#424242
Grey 900
#212121

Standard colours:

Primary Blue
#1c8ed8
Success
#18a551
Hover
Pressed
Danger
#e94250
Warning
#f1881c
Caution
#fed143

Buttons

Alert Toasts

Toast Success!
Toast Danger!
Toast Caution!

Labels

Success Label
Success Label
Danger Label
Warning Label
Caution Label

Inputs

Example with an icon embedded. You need to set a class on both input field and icon and put them in a row container. Set "with icon" on the input and "input field" on the icon.
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Icons

Using Material Icons provided by Google. Use the "Material Icon" class.
Here is an example of it being used on their own:
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And within an "Icon container". Icon container default is 8px padding. The "Small" subclass is 4px padding.
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Here's a 48 px version. Add the "48" class:
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