WcagAaDefaultTarget [rule] v1.0.0

All frontend components must meet WCAG 2.1 Level AA conformance by default — AA is the widely accepted legal and ethical baseline for web accessibility.

Severity

warning

Metric

WCAG conformance level

Pass

AA or AAA

Warn

A only

Block

below A

Key Aa Requirements

• 1.4.3 Contrast (Minimum): text ≥ 4.5:1, large text ≥ 3:1
• 1.4.4 Resize Text: text resizes to 200% without loss of content (no user-scalable=no)
• 1.4.10 Reflow: content reflows at 320px width without horizontal scrolling
• 1.4.11 Non-text Contrast: UI component boundaries ≥ 3:1 against adjacent colors
• 1.4.12 Text Spacing: no content or functionality lost when letter-spacing ≥ 0.12em, line-height ≥ 1.5, word-spacing ≥ 0.16em
• 2.1.1 Keyboard: all functionality operable by keyboard without time-dependent path
• 2.4.3 Focus Order: focus sequence preserves meaning and operability
• 2.4.7 Focus Visible: any keyboard operable UI has a visible focus indicator
• 4.1.3 Status Messages: status messages programmatically determined without receiving focus

WcagAaDefaultTarget [rule] v1.0.0

All frontend components must meet WCAG 2.1 Level AA conformance by default — AA is the widely accepted legal and ethical baseline for web accessibility.

Severity

warning

Metric

WCAG conformance level

Pass

AA or AAA

Warn

A only

Block

below A

Key Aa Requirements

• 1.4.3 Contrast (Minimum): text ≥ 4.5:1, large text ≥ 3:1
• 1.4.4 Resize Text: text resizes to 200% without loss of content (no user-scalable=no)
• 1.4.10 Reflow: content reflows at 320px width without horizontal scrolling
• 1.4.11 Non-text Contrast: UI component boundaries ≥ 3:1 against adjacent colors
• 1.4.12 Text Spacing: no content or functionality lost when letter-spacing ≥ 0.12em, line-height ≥ 1.5, word-spacing ≥ 0.16em
• 2.1.1 Keyboard: all functionality operable by keyboard without time-dependent path
• 2.4.3 Focus Order: focus sequence preserves meaning and operability
• 2.4.7 Focus Visible: any keyboard operable UI has a visible focus indicator
• 4.1.3 Status Messages: status messages programmatically determined without receiving focus

Rationale

AA is the conformance level required or referenced by most accessibility regulations worldwide (ADA, EN 301 549, AODA). Targeting it by default ensures broad user coverage and limits legal exposure. Level A alone is insufficient; AAA is aspirational but not required universally.

Severity

warning

Metric

WCAG conformance level

Pass

AA or AAA

Warn

A only

Block

below A

Key Aa Requirements

• 1.4.3 Contrast (Minimum): text ≥ 4.5:1, large text ≥ 3:1
• 1.4.4 Resize Text: text resizes to 200% without loss of content (no user-scalable=no)
• 1.4.10 Reflow: content reflows at 320px width without horizontal scrolling
• 1.4.11 Non-text Contrast: UI component boundaries ≥ 3:1 against adjacent colors
• 1.4.12 Text Spacing: no content or functionality lost when letter-spacing ≥ 0.12em, line-height ≥ 1.5, word-spacing ≥ 0.16em
• 2.1.1 Keyboard: all functionality operable by keyboard without time-dependent path
• 2.4.3 Focus Order: focus sequence preserves meaning and operability
• 2.4.7 Focus Visible: any keyboard operable UI has a visible focus indicator
• 4.1.3 Status Messages: status messages programmatically determined without receiving focus