<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2023-01-01</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001169770</issuerCik>
        <issuerName>BANC OF CALIFORNIA, INC.</issuerName>
        <issuerTradingSymbol>BANC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001959393</rptOwnerCik>
            <rptOwnerName>Sotoodeh John K</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O 3 MACARTHUR PLACE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SANTA ANA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92707</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>Chief Operating Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>30832.00</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Performance Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-06-06</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>62502.00</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Includes 14,635 restricted stock units (&quot;RSUs&quot;), granted to the Reporting Person as follows: (A) On March 1, 2022, the Reporting Person was granted RSUs representing 6,701 shares, which will be issued upon vesting and will vest annually, in substantially equal installments, over a three-year period, beginning on March 1, 2023; (B) On March 9, 2021, the Reporting Person was granted RSUs, of which 4,020 shares remain to be issued upon vesting and will vest annually, in two substantially equal installments on March 9, 2023 and 2024; and (C) On March 2, 2020, the Reporting Person was granted RSUs, of which 3,914 shares remain to be issued upon vesting and will vest annually, in two substantially equal installments on March 2, 2023 and 2024.</footnote>
        <footnote id="F2">Represents performance-based restricted stock units granted to the Reporting Person on June 6, 2022. Shares will be issued upon achievement of both (a) the Issuer's common stock achieving a twenty-day volume-weighted average price of $35 per share within four years from the date of grant and (b) the Reporting Person's continued service through the fourth anniversary of the grant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Ido Dotan, Attorney-in-Fact for John K Sotoodeh</signatureName>
        <signatureDate>2023-01-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
