What is the minimum contrast ratio for WCAG AA compliance?

For WCAG AA compliance, normal text requires a minimum contrast ratio of 4.5:1, while large text (18pt or 14pt bold) requires 3:1.

What is the difference between WCAG AA and AAA standards?

WCAG AAA requires higher contrast ratios: 7:1 for normal text and 4.5:1 for large text, compared to AA's 4.5:1 and 3:1 respectively.

How do I fix poor color contrast?

Use our automatic fix feature to adjust either text or background colors while maintaining your design intent, or manually adjust colors using HSL sliders with visual indicators showing optimal zones for AA/AAA compliance.

What are the visual indicators on the adjustment sliders?

The green zones and AA/AAA markers show optimal ranges for achieving WCAG compliance. The direction hints (Lighter/Darker) guide you toward better contrast based on your current color combination.

Can I test custom color combinations?

Yes, you can enter any hex color codes or use the color picker to select custom colors. The URL updates automatically so you can share specific color combinations.

Color Contrast Checker - WCAG AA & AAA Compliance Tool

1.00:1

Contrast

Fail

Imbi kakhulu

Umbhalo oqhelekileyo

AA (4.5:1)

✖

AAA (7:1)

✖

Umbhalo omkhulu

AA (3:1)

✖

AAA (4.5:1)

✖

Umbala wombhalo

#FFFFFF

#ffffff

Umbala wemvelaphi

#546E7A

#546e7a

Izilungiso ezikhawulezayo

Isihloko sokujonga kuqala

Ingcuka emdaka ekhawulezayo itsiba phezu kwenja evila

Umzekelo wombhalo omncinci (12px)

Umbhalo

#ffffff

Imvelaphi

#546e7a

Imigangatho ye-WCAG

Level AA

Umgangatho ophantsi wokuqaqamba we 4.5:1 kumbhalo oqhelekileyo kunye ne 3:1 kumbhalo omkhulu. Ukuhlanganiswa kwamava okusebenzelana kwiwebhsayithi ezininzi.

Level AAA

Umgangatho ogqithi wokuqaqamba kwe 7:1 kumbhalo oqhelekileyo kunye ne 4.5:1 kumabhodi amagama amakhulu. Kuyacetyiswa okona kusetyenziswa kakhulu ukusebenzelana kodwa ngcono ukufikelela.

Ukungqubana okungonelanga kuzo zonke izicatshulwa - akuphumeleli kwimigangatho ye-WCAG.

Umkhangeli wokungafani kombala

Bala umlinganiselo we-contrast wombhalo kunye nemibala yangasemva.

Khetha umbala usebenzisa isithwebuli sembala eshandweni lombhalo kunye nombala wangasemva okanye faka umbala kwi-RGB yombala hex (#259 okanye #2596BE). Ungalungisa isilayida ukukhetha umbala. ISikhokelo seWeb Content Accessibility (WCAG) sinomgaqo ethile onceda ukuzibandakanya nokuba umbhalo uyafundeka kubasebenzisi abakubonayo. Le mibandela isebenzisa i-algorithm ekhethekileyo yokugqabanisa indibaniselwano yombala kwimilinganiselo yokuqhathaniswa. Ngokusebenzisa le fomula, i-WCAG ichaza ukuba umgangatho wokuqaqamba kwe 4.5:1 kunye nombhalo kunye nemvelaphi yayo ilungelelene nombhalo oqhelekileyo, kwaye umbhalo omkhulu (18+ pt oqhelekileyo, okanye 14+ pt otyebileyo) kufanele ukuba enye ibuninzi bunye ubuncinci 3:1.

Iimpawu eziphambili

• Ukubala umyinge wokungqubana ngexesha lokwenyani
• Ukujonga ukuthotyelwa kwe-WCAG AA & AAA
• I-HSL sliders yokulungisa kakuhle
• Iifomathi ezininzi zokujonga kuqala

Izixhobo eziphambili

• Ukulungiswa kombala ngokuzenzekelayo
• Iisampulu zesicatshulwa kunye nemvelaphi
• Ukufunyanwa kwegama lombala
• Thumela iziphumo

Umkhangeli we-Contrast yeMibala