Check colour contrast against WCAG AA and AAA — the exact ratio, not an estimate.
1
What you provide
2
Result
PASS
4.54:1 — passes AA
Fine for AA, which is what most standards require. It does not reach AAA for normal text — worth aiming for on body copy where you can.
Aa
Live preview
4.54:1
Against the WCAG thresholds
4.54:1✓pass
✕Below 3:1 — fails everything
!3:1 — AA large text only
✓4.5:1 — AA normal text
✓7:1 — AAA normal text
The scale runs to 21:1, the maximum possible ratio — pure black on pure white.
Which levels this passes
Check
Normal text
Large text
AA
✓4.5:1pass
✓3:1pass
AAA
✕7:1issue
✓4.5:1pass
Diagnostic telemetry
Contrast ratio
4.54:1
Foreground
#767676
Background
#ffffff
AA — normal textNeeds 4.5:1
Pass
AA — large text≥18pt, or ≥14pt bold. Needs 3:1
Pass
AAA — normal textNeeds 7:1
Fail
AAA — large textNeeds 4.5:1
Pass
What this cannot tell you
The ratio follows the WCAG formula exactly, but contrast is only one part of legibility. Font size, weight, spacing and the surrounding design all matter and none are measured here.
WCAG thresholds are minimums, not guarantees that text is comfortable — meeting AA is a floor, not a target.
It checks two solid colours. Text over an image or gradient has a contrast that varies pixel by pixel, which this cannot assess.